10000021122 has 192 divisors, whose sum is σ = 27122135040. Its totient is φ = 2592819072.

The previous prime is 10000021111. The next prime is 10000021139. The reversal of 10000021122 is 22112000001.

It is a super-2 number, since 2×10000021122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38022763 + ... + 38023025.

It is an arithmetic number, because the mean of its divisors is an integer number (141261120).

Almost surely, 2^10000021122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10000021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13561067520).

10000021122 is an abundant number, since it is smaller than the sum of its proper divisors (17122113918).

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

10000021122 is a wasteful number, since it uses less digits than its factorization.

10000021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10000021122 its reverse (22112000001), we get a palindrome (32112021123).

The spelling of 10000021122 in words is "ten billion, twenty-one thousand, one hundred twenty-two".