100012505502 has 64 divisors (see below), whose sum is σ = 246545994240. Its totient is φ = 26338207104.

The previous prime is 100012505479. The next prime is 100012505543. The reversal of 100012505502 is 205505210001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238824 + ... + 507012.

It is an arithmetic number, because the mean of its divisors is an integer number (3852281160).

Almost surely, 2^100012505502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100012505502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123272997120).

100012505502 is an abundant number, since it is smaller than the sum of its proper divisors (146533488738).

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

100012505502 is a wasteful number, since it uses less digits than its factorization.

100012505502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268897.

The product of its (nonzero) digits is 500, while the sum is 21.

Adding to 100012505502 its reverse (205505210001), we get a palindrome (305517715503).

The spelling of 100012505502 in words is "one hundred billion, twelve million, five hundred five thousand, five hundred two".