21130102120122 has 12 divisors (see below), whose sum is σ = 45781887926970. Its totient is φ = 7043367373368.

The previous prime is 21130102120097. The next prime is 21130102120151. The reversal of 21130102120122 is 22102120103112.

It can be written as a sum of positive squares in only one way, i.e., 15749460536481 + 5380641583641 = 3968559^2 + 2319621^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1173894562229 = 21130102120122 / (2 + 1 + 1 + 3 + 0 + 1 + 0 + 2 + 1 + 2 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 21130102120095 and 21130102120104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 586947281097 + ... + 586947281132.

Almost surely, 2^{21130102120122} is an apocalyptic number.

21130102120122 is an abundant number, since it is smaller than the sum of its proper divisors (24651785806848).

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

21130102120122 is a wasteful number, since it uses less digits than its factorization.

21130102120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173894562237 (or 1173894562234 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21130102120122 its reverse (22102120103112), we get a palindrome (43232222223234).

The spelling of 21130102120122 in words is "twenty-one trillion, one hundred thirty billion, one hundred two million, one hundred twenty thousand, one hundred twenty-two".