21022120122102 has 96 divisors (see below), whose sum is σ = 49792772450304. Its totient is φ = 6357003120000.

The previous prime is 21022120122097. The next prime is 21022120122119. The reversal of 21022120122102 is 20122102122012.

It is a happy number.

21022120122102 is a `hidden beast` number, since 21 + 0 + 221 + 201 + 221 + 0 + 2 = 666.

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

It is a congruent number.

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, 197268978 + ... + 197375514.

It is an arithmetic number, because the mean of its divisors is an integer number (518674713024).

Almost surely, 2^{21022120122102} is an apocalyptic number.

21022120122102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21022120122102 is an abundant number, since it is smaller than the sum of its proper divisors (28770652328202).

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

21022120122102 is a wasteful number, since it uses less digits than its factorization.

21022120122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108634 (or 108631 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21022120122102 its reverse (20122102122012), we get a palindrome (41144222244114).

The spelling of 21022120122102 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, one hundred twenty-two thousand, one hundred two".