102130021202 has 24 divisors (see below), whose sum is σ = 178293106908. Its totient is φ = 43691985920.

The previous prime is 102130021193. The next prime is 102130021243. The reversal of 102130021202 is 202120031201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100146298681 + 1983722521 = 316459^2 + 44539^2 .

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, 12408383 + ... + 12416610.

Almost surely, 2^102130021202 is an apocalyptic number.

102130021202 is a deficient number, since it is larger than the sum of its proper divisors (76163085706).

102130021202 is a wasteful number, since it uses less digits than its factorization.

102130021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24825034 (or 24825023 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102130021202 its reverse (202120031201), we get a palindrome (304250052403).

Subtracting 102130021202 from its reverse (202120031201), we obtain a palindrome (99990009999).

The spelling of 102130021202 in words is "one hundred two billion, one hundred thirty million, twenty-one thousand, two hundred two".