102100100202 has 24 divisors (see below), whose sum is σ = 221700964836. Its totient is φ = 33958892736.

The previous prime is 102100100197. The next prime is 102100100213. The reversal of 102100100202 is 202001001201.

It can be written as a sum of positive squares in 2 ways, for example, as 100463007681 + 1637092521 = 316959^2 + 40461^2 .

It is a super-2 number, since 2×102100100202² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6197713 + ... + 6214164.

Almost surely, 2^102100100202 is an apocalyptic number.

102100100202 is an abundant number, since it is smaller than the sum of its proper divisors (119600864634).

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

102100100202 is a wasteful number, since it uses less digits than its factorization.

102100100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12412342 (or 12412339 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102100100202 its reverse (202001001201), we get a palindrome (304101101403).

Subtracting 102100100202 from its reverse (202001001201), we obtain a palindrome (99900900999).

The spelling of 102100100202 in words is "one hundred two billion, one hundred million, one hundred thousand, two hundred two".