21122101120122 has 96 divisors (see below), whose sum is σ = 51692292408960. Its totient is φ = 6380131095360.

The previous prime is 21122101120093. The next prime is 21122101120139. The reversal of 21122101120122 is 22102110122112.

21122101120122 is a `hidden beast` number, since 211 + 2 + 210 + 1 + 120 + 122 = 666.

It is a super-2 number, since 2×21122101120122² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21122101120095 and 21122101120104.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23106379 + ... + 24003102.

It is an arithmetic number, because the mean of its divisors is an integer number (538461379260).

Almost surely, 2^{21122101120122} is an apocalyptic number.

21122101120122 is an abundant number, since it is smaller than the sum of its proper divisors (30570191288838).

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

21122101120122 is a wasteful number, since it uses less digits than its factorization.

21122101120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47109553 (or 47109528 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 21122101120122 its reverse (22102110122112), we get a palindrome (43224211242234).

The spelling of 21122101120122 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred one million, one hundred twenty thousand, one hundred twenty-two".