21311121424332 has 24 divisors (see below), whose sum is σ = 49750171163056. Its totient is φ = 7100246973888.

The previous prime is 21311121424331. The next prime is 21311121424343. The reversal of 21311121424332 is 23342412111312.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21311121424332.

It is not an unprimeable number, because it can be changed into a prime (21311121424331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432495283 + ... + 432544554.

Almost surely, 2^{21311121424332} is an apocalyptic number.

It is an amenable number.

21311121424332 is an abundant number, since it is smaller than the sum of its proper divisors (28439049738724).

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

21311121424332 is a wasteful number, since it uses less digits than its factorization.

21311121424332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865041897 (or 865041895 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

Adding to 21311121424332 its reverse (23342412111312), we get a palindrome (44653533535644).

The spelling of 21311121424332 in words is "twenty-one trillion, three hundred eleven billion, one hundred twenty-one million, four hundred twenty-four thousand, three hundred thirty-two".