20452900122 has 96 divisors (see below), whose sum is σ = 47170169280. Its totient is φ = 6394671360.

The previous prime is 20452900099. The next prime is 20452900147. The reversal of 20452900122 is 22100925402.

It is a happy number.

20452900122 is a `hidden beast` number, since 2 + 0 + 452 + 90 + 0 + 122 = 666.

It is a super-2 number, since 2×20452900122² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2549097 + ... + 2557107.

It is an arithmetic number, because the mean of its divisors is an integer number (491355930).

Almost surely, 2^20452900122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20452900122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23585084640).

20452900122 is an abundant number, since it is smaller than the sum of its proper divisors (26717269158).

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

20452900122 is a wasteful number, since it uses less digits than its factorization.

20452900122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8188 (or 8185 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The spelling of 20452900122 in words is "twenty billion, four hundred fifty-two million, nine hundred thousand, one hundred twenty-two".