102000120021220 has 48 divisors (see below), whose sum is σ = 217959131335680. Its totient is φ = 40084886027264.

The previous prime is 102000120021199. The next prime is 102000120021263. The reversal of 102000120021220 is 22120021000201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102000120021220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23466244 + ... + 27471163.

It is an arithmetic number, because the mean of its divisors is an integer number (4540815236160).

Almost surely, 2^{102000120021220} is an apocalyptic number.

102000120021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102000120021220 is an abundant number, since it is smaller than the sum of its proper divisors (115959011314460).

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

102000120021220 is a wasteful number, since it uses less digits than its factorization.

102000120021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50939172 (or 50939170 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102000120021220 its reverse (22120021000201), we get a palindrome (124120141021421).

The spelling of 102000120021220 in words is "one hundred two trillion, one hundred twenty million, twenty-one thousand, two hundred twenty".