10202102100 has 108 divisors (see below), whose sum is σ = 32073765724. Its totient is φ = 2712407040.

The previous prime is 10202102089. The next prime is 10202102123. The reversal of 10202102100 is 120120201.

It can be written as a sum of positive squares in 6 ways, for example, as 2509408836 + 7692693264 = 50094^2 + 87708^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 286482 + ... + 320118.

Almost surely, 2^10202102100 is an apocalyptic number.

10202102100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10202102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16036882862).

10202102100 is an abundant number, since it is smaller than the sum of its proper divisors (21871663624).

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

10202102100 is a wasteful number, since it uses less digits than its factorization.

10202102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33994 (or 33984 counting only the distinct ones).

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

Adding to 10202102100 its reverse (120120201), we get a palindrome (10322222301).

The spelling of 10202102100 in words is "ten billion, two hundred two million, one hundred two thousand, one hundred".