21231310030100 has 36 divisors (see below), whose sum is σ = 46072210564800. Its totient is φ = 8492474648160.

The previous prime is 21231310030067. The next prime is 21231310030163. The reversal of 21231310030100 is 103001313212.

It is a congruent number.

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, 20150171 + ... + 21177629.

It is an arithmetic number, because the mean of its divisors is an integer number (1279783626800).

Almost surely, 2^{21231310030100} is an apocalyptic number.

21231310030100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21231310030100 is an abundant number, since it is smaller than the sum of its proper divisors (24840900534700).

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

21231310030100 is a wasteful number, since it uses less digits than its factorization.

21231310030100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234112 (or 1234105 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21231310030100 its reverse (103001313212), we get a palindrome (21334311343312).

The spelling of 21231310030100 in words is "twenty-one trillion, two hundred thirty-one billion, three hundred ten million, thirty thousand, one hundred".