102101202120002 has 4 divisors (see below), whose sum is σ = 153151803180006. Its totient is φ = 51050601060000.

The previous prime is 102101202119989. The next prime is 102101202120013. The reversal of 102101202120002 is 200021202101201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 59497789137361 + 42603412982641 = 7713481^2 + 6527129^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525300529999 + ... + 25525300530002.

Almost surely, 2^{102101202120002} is an apocalyptic number.

102101202120002 is a deficient number, since it is larger than the sum of its proper divisors (51050601060004).

102101202120002 is an equidigital number, since it uses as much as digits as its factorization.

102101202120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51050601060003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102101202120002 its reverse (200021202101201), we get a palindrome (302122404221203).

The spelling of 102101202120002 in words is "one hundred two trillion, one hundred one billion, two hundred two million, one hundred twenty thousand, two".