2100323210100 has 72 divisors (see below), whose sum is σ = 6077357774208. Its totient is φ = 560047238400.

The previous prime is 2100323209991. The next prime is 2100323210113. The reversal of 2100323210100 is 10123230012.

It is a super-2 number, since 2×2100323210100² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2100323210100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4213272 + ... + 4685328.

It is an arithmetic number, because the mean of its divisors is an integer number (84407746864).

Almost surely, 2^{2100323210100} is an apocalyptic number.

2100323210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100323210100 is an abundant number, since it is smaller than the sum of its proper divisors (3977034564108).

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

2100323210100 is a wasteful number, since it uses less digits than its factorization.

2100323210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486905 (or 486898 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 2100323210100 its reverse (10123230012), we get a palindrome (2110446440112).

The spelling of 2100323210100 in words is "two trillion, one hundred billion, three hundred twenty-three million, two hundred ten thousand, one hundred".