20312212332 has 24 divisors (see below), whose sum is σ = 48044412976. Its totient is φ = 6677987328.

The previous prime is 20312212331. The next prime is 20312212373. The reversal of 20312212332 is 23321221302.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20312212299 and 20312212308.

It is not an unprimeable number, because it can be changed into a prime (20312212331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11592853 + ... + 11594604.

Almost surely, 2^20312212332 is an apocalyptic number.

It is an amenable number.

20312212332 is an abundant number, since it is smaller than the sum of its proper divisors (27732200644).

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

20312212332 is a wasteful number, since it uses less digits than its factorization.

20312212332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23187537 (or 23187535 counting only the distinct ones).

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

Adding to 20312212332 its reverse (23321221302), we get a palindrome (43633433634).

The spelling of 20312212332 in words is "twenty billion, three hundred twelve million, two hundred twelve thousand, three hundred thirty-two".