21010222102120 has 32 divisors (see below), whose sum is σ = 47274588594720. Its totient is φ = 8403806376000.

The previous prime is 21010222102097. The next prime is 21010222102153. The reversal of 21010222102120 is 2120122201012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21010222102094 and 21010222102103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7620006 + ... + 10004245.

It is an arithmetic number, because the mean of its divisors is an integer number (1477330893585).

Almost surely, 2^{21010222102120} is an apocalyptic number.

21010222102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010222102120 is an abundant number, since it is smaller than the sum of its proper divisors (26264366492600).

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

21010222102120 is a wasteful number, since it uses less digits than its factorization.

21010222102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17654065 (or 17654061 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21010222102120 its reverse (2120122201012), we get a palindrome (23130344303132).

The spelling of 21010222102120 in words is "twenty-one trillion, ten billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty".