21232311323212 has 48 divisors (see below), whose sum is σ = 40556100049920. Its totient is φ = 9645888110400.

The previous prime is 21232311323161. The next prime is 21232311323219.

21232311323212 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21232311323212² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21232311323219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1379520037 + ... + 1379535427.

It is an arithmetic number, because the mean of its divisors is an integer number (844918751040).

Almost surely, 2^{21232311323212} is an apocalyptic number.

21232311323212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21232311323212 is a deficient number, since it is larger than the sum of its proper divisors (19323788726708).

21232311323212 is a wasteful number, since it uses less digits than its factorization.

21232311323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142 (or 30140 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

It can be divided in two parts, 2123231 and 1323212, that added together give a palindrome (3446443).

The spelling of 21232311323212 in words is "twenty-one trillion, two hundred thirty-two billion, three hundred eleven million, three hundred twenty-three thousand, two hundred twelve".