102220021202120 has 32 divisors (see below), whose sum is σ = 230889970092600. Its totient is φ = 40728911167488.

The previous prime is 102220021202083. The next prime is 102220021202261. The reversal of 102220021202120 is 21202120022201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 82581456704356 + 19638564497764 = 9087434^2 + 4431542^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4971780635 + ... + 4971801194.

Almost surely, 2^{102220021202120} is an apocalyptic number.

102220021202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102220021202120 is an abundant number, since it is smaller than the sum of its proper divisors (128669948890480).

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

102220021202120 is a wasteful number, since it uses less digits than its factorization.

102220021202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943582097 (or 9943582093 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102220021202120 its reverse (21202120022201), we get a palindrome (123422141224321).

The spelling of 102220021202120 in words is "one hundred two trillion, two hundred twenty billion, twenty-one million, two hundred two thousand, one hundred twenty".