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20022220000020 = 223571727191031347
BaseRepresentation
bin1001000110101110010010…
…10011111000101100010100
32121220002211221022110102110
410203113021103320230110
510111021001310000040
6110330025245511020
74134362163634020
oct443271123705424
977802757273373
1020022220000020
11641a415236a17
1222b4534b72470
13b231198a3444
144d311b309380
1524ac5596e980
hex1235c94f8b14

20022220000020 has 192 divisors, whose sum is σ = 67865008619520. Its totient is φ = 4305712785408.

The previous prime is 20022220000007. The next prime is 20022220000021. The reversal of 20022220000020 is 2000002222002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20022219999960 and 20022220000005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022220000021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18897987 + ... + 19929333.

It is an arithmetic number, because the mean of its divisors is an integer number (353463586560).

Almost surely, 220022220000020 is an apocalyptic number.

20022220000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20022220000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33932504309760).

20022220000020 is an abundant number, since it is smaller than the sum of its proper divisors (47842788619500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20022220000020 is a wasteful number, since it uses less digits than its factorization.

20022220000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034102 (or 1034100 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20022220000020 its reverse (2000002222002), we get a palindrome (22022222222022).

The spelling of 20022220000020 in words is "twenty trillion, twenty-two billion, two hundred twenty million, twenty", and thus it is an aban number.