102012202120 has 16 divisors (see below), whose sum is σ = 229527454860. Its totient is φ = 40804880832.

The previous prime is 102012202081. The next prime is 102012202157. The reversal of 102012202120 is 21202210201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92417216004 + 9594986116 = 304002^2 + 97954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102012202120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275152487 + ... + 1275152566.

Almost surely, 2^102012202120 is an apocalyptic number.

102012202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102012202120 is an abundant number, since it is smaller than the sum of its proper divisors (127515252740).

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

102012202120 is a wasteful number, since it uses less digits than its factorization.

102012202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550305064 (or 2550305060 counting only the distinct ones).

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

Adding to 102012202120 its reverse (21202210201), we get a palindrome (123214412321).

The spelling of 102012202120 in words is "one hundred two billion, twelve million, two hundred two thousand, one hundred twenty".