21311222133032 has 16 divisors (see below), whose sum is σ = 43032275461140. Its totient is φ = 9835948676736.

The previous prime is 21311222132957. The next prime is 21311222133067. The reversal of 21311222133032 is 23033122211312.

It can be written as a sum of positive squares in 2 ways, for example, as 15020786943556 + 6290435189476 = 3875666^2 + 2508074^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 21311222132992 and 21311222133010.

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, 102457798613 + ... + 102457798820.

Almost surely, 2^{21311222133032} is an apocalyptic number.

It is an amenable number.

21311222133032 is an abundant number, since it is smaller than the sum of its proper divisors (21721053328108).

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

21311222133032 is a wasteful number, since it uses less digits than its factorization.

21311222133032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204915597452 (or 204915597448 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 21311222133032 its reverse (23033122211312), we get a palindrome (44344344344344).

The spelling of 21311222133032 in words is "twenty-one trillion, three hundred eleven billion, two hundred twenty-two million, one hundred thirty-three thousand, thirty-two".