21331113133330 has 64 divisors (see below), whose sum is σ = 51552676240128. Its totient is φ = 6137223356160.

The previous prime is 21331113133283. The next prime is 21331113133397. The reversal of 21331113133330 is 3333131113312.

It is a super-2 number, since 2×21331113133330² (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 31 ways as a sum of consecutive naturals, for example, 1065480157 + ... + 1065500176.

It is an arithmetic number, because the mean of its divisors is an integer number (805510566252).

Almost surely, 2^{21331113133330} is an apocalyptic number.

21331113133330 is an abundant number, since it is smaller than the sum of its proper divisors (30221563106798).

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

21331113133330 is a wasteful number, since it uses less digits than its factorization.

21331113133330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130980371.

The product of its (nonzero) digits is 4374, while the sum is 28.

Adding to 21331113133330 its reverse (3333131113312), we get a palindrome (24664244246642).

The spelling of 21331113133330 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred thirteen million, one hundred thirty-three thousand, three hundred thirty".