21020010112122 has 32 divisors (see below), whose sum is σ = 50871957247872. Its totient is φ = 5652439693824.

The previous prime is 21020010112117. The next prime is 21020010112141. The reversal of 21020010112122 is 22121101002012.

It is a super-2 number, since 2×21020010112122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14719894323 + ... + 14719895750.

It is an arithmetic number, because the mean of its divisors is an integer number (1589748663996).

Almost surely, 2^{21020010112122} is an apocalyptic number.

21020010112122 is an abundant number, since it is smaller than the sum of its proper divisors (29851947135750).

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

21020010112122 is a wasteful number, since it uses less digits than its factorization.

21020010112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29439790102.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21020010112122 its reverse (22121101002012), we get a palindrome (43141111114134).

The spelling of 21020010112122 in words is "twenty-one trillion, twenty billion, ten million, one hundred twelve thousand, one hundred twenty-two".