21312122333332 has 12 divisors (see below), whose sum is σ = 37308311482176. Its totient is φ = 10652604767000.

The previous prime is 21312122333287. The next prime is 21312122333371. The reversal of 21312122333332 is 23333322121312.

It is a super-2 number, since 2×21312122333332² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21312122333294 and 21312122333303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864086044 + ... + 864110707.

It is an arithmetic number, because the mean of its divisors is an integer number (3109025956848).

Almost surely, 2^{21312122333332} is an apocalyptic number.

It is an amenable number.

21312122333332 is a deficient number, since it is larger than the sum of its proper divisors (15996189148844).

21312122333332 is a wasteful number, since it uses less digits than its factorization.

21312122333332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728199838 (or 1728199836 counting only the distinct ones).

The product of its digits is 23328, while the sum is 31.

Adding to 21312122333332 its reverse (23333322121312), we get a palindrome (44645444454644).

The spelling of 21312122333332 in words is "twenty-one trillion, three hundred twelve billion, one hundred twenty-two million, three hundred thirty-three thousand, three hundred thirty-two".