21311033022 has 48 divisors (see below), whose sum is σ = 46764926208. Its totient is φ = 7012879440.

The previous prime is 21311032913. The next prime is 21311033033. The reversal of 21311033022 is 22033011312.

21311033022 is a `hidden beast` number, since 2 + 1 + 311 + 0 + 330 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21311032986 and 21311033004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2360497 + ... + 2369507.

It is an arithmetic number, because the mean of its divisors is an integer number (974269296).

Almost surely, 2^21311033022 is an apocalyptic number.

21311033022 is an abundant number, since it is smaller than the sum of its proper divisors (25453893186).

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

21311033022 is a wasteful number, since it uses less digits than its factorization.

21311033022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10685 (or 10682 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21311033022 its reverse (22033011312), we get a palindrome (43344044334).

The spelling of 21311033022 in words is "twenty-one billion, three hundred eleven million, thirty-three thousand, twenty-two".