21331311311334 has 16 divisors (see below), whose sum is σ = 42738399934272. Its totient is φ = 7097807551848.

The previous prime is 21331311311333. The next prime is 21331311311339. The reversal of 21331311311334 is 43311311313312.

It is a super-2 number, since 2×21331311311334² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331311311333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3157384324 + ... + 3157391079.

It is an arithmetic number, because the mean of its divisors is an integer number (2671149995892).

Almost surely, 2^{21331311311334} is an apocalyptic number.

21331311311334 is an abundant number, since it is smaller than the sum of its proper divisors (21407088622938).

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

21331311311334 is a wasteful number, since it uses less digits than its factorization.

21331311311334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314775971.

The product of its digits is 5832, while the sum is 30.

Adding to 21331311311334 its reverse (43311311313312), we get a palindrome (64642622624646).

The spelling of 21331311311334 in words is "twenty-one trillion, three hundred thirty-one billion, three hundred eleven million, three hundred eleven thousand, three hundred thirty-four".