21302212332 has 48 divisors (see below), whose sum is σ = 50254495200. Its totient is φ = 7022673408.

The previous prime is 21302212313. The next prime is 21302212339. The reversal of 21302212332 is 23321220312.

It is a happy number.

It is a super-2 number, since 2×21302212332² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21302212299 and 21302212308.

It is not an unprimeable number, because it can be changed into a prime (21302212339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391038 + ... + 442170.

It is an arithmetic number, because the mean of its divisors is an integer number (1046968650).

Almost surely, 2^21302212332 is an apocalyptic number.

It is an amenable number.

21302212332 is an abundant number, since it is smaller than the sum of its proper divisors (28952282868).

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

21302212332 is a wasteful number, since it uses less digits than its factorization.

21302212332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51522 (or 51520 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21302212332 its reverse (23321220312), we get a palindrome (44623432644).

The spelling of 21302212332 in words is "twenty-one billion, three hundred two million, two hundred twelve thousand, three hundred thirty-two".