20122001040 has 160 divisors (see below), whose sum is σ = 66531456000. Its totient is φ = 5013225472.

The previous prime is 20122001021. The next prime is 20122001051. The reversal of 20122001040 is 4010022102.

It is a super-2 number, since 2×20122001040² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 540961 + ... + 576959.

It is an arithmetic number, because the mean of its divisors is an integer number (415821600).

Almost surely, 2^20122001040 is an apocalyptic number.

20122001040 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 20122001040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33265728000).

20122001040 is an abundant number, since it is smaller than the sum of its proper divisors (46409454960).

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

20122001040 is a wasteful number, since it uses less digits than its factorization.

20122001040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36169 (or 36163 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20122001040 its reverse (4010022102), we get a palindrome (24132023142).

The spelling of 20122001040 in words is "twenty billion, one hundred twenty-two million, one thousand, forty".