21022311322012 has 48 divisors (see below), whose sum is σ = 49395081157632. Its totient is φ = 7560471602880.

The previous prime is 21022311322007. The next prime is 21022311322039.

21022311322012 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 2625159748 + ... + 2625167755.

It is an arithmetic number, because the mean of its divisors is an integer number (1029064190784).

Almost surely, 2^{21022311322012} is an apocalyptic number.

21022311322012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21022311322012 is an abundant number, since it is smaller than the sum of its proper divisors (28372769835620).

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

21022311322012 is a wasteful number, since it uses less digits than its factorization.

21022311322012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250327538 (or 5250327536 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

It can be divided in two parts, 2102231 and 1322012, that added together give a palindrome (3424243).

The spelling of 21022311322012 in words is "twenty-one trillion, twenty-two billion, three hundred eleven million, three hundred twenty-two thousand, twelve".