21120000010122 has 64 divisors (see below), whose sum is σ = 47329836382080. Its totient is φ = 6238108472064.

The previous prime is 21120000010103. The next prime is 21120000010127. The reversal of 21120000010122 is 22101000002112.

It is a junction number, because it is equal to n+sod(n) for n = 21120000010098 and 21120000010107.

It is not an unprimeable number, because it can be changed into a prime (21120000010127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26593848 + ... + 27376499.

It is an arithmetic number, because the mean of its divisors is an integer number (739528693470).

Almost surely, 2^{21120000010122} is an apocalyptic number.

21120000010122 is an abundant number, since it is smaller than the sum of its proper divisors (26209836371958).

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

21120000010122 is a wasteful number, since it uses less digits than its factorization.

21120000010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53970567.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21120000010122 its reverse (22101000002112), we get a palindrome (43221000012234).

The spelling of 21120000010122 in words is "twenty-one trillion, one hundred twenty billion, ten thousand, one hundred twenty-two".