21211333023012 has 48 divisors (see below), whose sum is σ = 54010239925824. Its totient is φ = 6425562880000.

The previous prime is 21211333022987. The next prime is 21211333023073. The reversal of 21211333023012 is 21032033311212.

It is a super-2 number, since 2×21211333023012² (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 15 ways as a sum of consecutive naturals, for example, 26019489 + ... + 26822312.

It is an arithmetic number, because the mean of its divisors is an integer number (1125213331788).

Almost surely, 2^{21211333023012} is an apocalyptic number.

21211333023012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21211333023012 is an abundant number, since it is smaller than the sum of its proper divisors (32798906902812).

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

21211333023012 is a wasteful number, since it uses less digits than its factorization.

21211333023012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52844860 (or 52844858 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21211333023012 its reverse (21032033311212), we get a palindrome (42243366334224).

The spelling of 21211333023012 in words is "twenty-one trillion, two hundred eleven billion, three hundred thirty-three million, twenty-three thousand, twelve".