21100031231330 has 16 divisors (see below), whose sum is σ = 37989688561344. Its totient is φ = 8437871971440.

The previous prime is 21100031231287. The next prime is 21100031231353. The reversal of 21100031231330 is 3313213000112.

It is a super-2 number, since 2×21100031231330² (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 7 ways as a sum of consecutive naturals, for example, 267523736 + ... + 267602595.

It is an arithmetic number, because the mean of its divisors is an integer number (2374355535084).

Almost surely, 2^{21100031231330} is an apocalyptic number.

21100031231330 is a deficient number, since it is larger than the sum of its proper divisors (16889657330014).

21100031231330 is a wasteful number, since it uses less digits than its factorization.

21100031231330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535130281.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21100031231330 its reverse (3313213000112), we get a palindrome (24413244231442).

The spelling of 21100031231330 in words is "twenty-one trillion, one hundred billion, thirty-one million, two hundred thirty-one thousand, three hundred thirty".