21320033022 has 48 divisors (see below), whose sum is σ = 47085021360. Its totient is φ = 6969620736.

The previous prime is 21320032963. The next prime is 21320033027. The reversal of 21320033022 is 22033002312.

It is a happy number.

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 = 21320032986 and 21320033004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320033027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4022278 + ... + 4027574.

It is an arithmetic number, because the mean of its divisors is an integer number (980937945).

Almost surely, 2^21320033022 is an apocalyptic number.

21320033022 is an abundant number, since it is smaller than the sum of its proper divisors (25764988338).

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

21320033022 is a wasteful number, since it uses less digits than its factorization.

21320033022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9577 (or 9574 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21320033022 its reverse (22033002312), we get a palindrome (43353035334).

The spelling of 21320033022 in words is "twenty-one billion, three hundred twenty million, thirty-three thousand, twenty-two".