21234100313100 has 72 divisors (see below), whose sum is σ = 65051290857168. Its totient is φ = 5329342822400.

The previous prime is 21234100313059. The next prime is 21234100313131. The reversal of 21234100313100 is 131300143212.

It is a super-2 number, since 2×21234100313100² (a number of 27 digits) contains 22 as substring.

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, 2081769441 + ... + 2081779640.

It is an arithmetic number, because the mean of its divisors is an integer number (903490150794).

Almost surely, 2^{21234100313100} is an apocalyptic number.

21234100313100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21234100313100 is an abundant number, since it is smaller than the sum of its proper divisors (43817190544068).

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

21234100313100 is a wasteful number, since it uses less digits than its factorization.

21234100313100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163549115 (or 4163549108 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21234100313100 its reverse (131300143212), we get a palindrome (21365400456312).

The spelling of 21234100313100 in words is "twenty-one trillion, two hundred thirty-four billion, one hundred million, three hundred thirteen thousand, one hundred".