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2222021220020 = 22572910934914387
BaseRepresentation
bin100000010101011010110…
…010010001011010110100
321212102102110221102022222
4200111122302101122310
5242401144413020040
64420441002141512
7316351520510510
oct40253262213264
97772373842288
102222021220020
11787399061578
122ba7864b1898
131316c6c25044
1479791477140
153cbee872bb5
hex2055ac916b4

2222021220020 has 192 divisors, whose sum is σ = 5583695040000. Its totient is φ = 726678521856.

The previous prime is 2222021219989. The next prime is 2222021220031. The reversal of 2222021220020 is 200221202222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154439267 + ... + 154453653.

It is an arithmetic number, because the mean of its divisors is an integer number (29081745000).

Almost surely, 22222021220020 is an apocalyptic number.

2222021220020 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 2222021220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2791847520000).

2222021220020 is an abundant number, since it is smaller than the sum of its proper divisors (3361673819980).

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

2222021220020 is a wasteful number, since it uses less digits than its factorization.

2222021220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14890 (or 14888 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2222021220020 its reverse (200221202222), we get a palindrome (2422242422242).

The spelling of 2222021220020 in words is "two trillion, two hundred twenty-two billion, twenty-one million, two hundred twenty thousand, twenty".