20323322012 has 24 divisors (see below), whose sum is σ = 41219136000. Its totient is φ = 8587318320.

The previous prime is 20323321981. The next prime is 20323322057. The reversal of 20323322012 is 21022332302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5109512 + ... + 5113487.

It is an arithmetic number, because the mean of its divisors is an integer number (1717464000).

Almost surely, 2^20323322012 is an apocalyptic number.

It is an amenable number.

20323322012 is an abundant number, since it is smaller than the sum of its proper divisors (20895813988).

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

20323322012 is a wasteful number, since it uses less digits than its factorization.

20323322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223081 (or 10223079 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20323322012 its reverse (21022332302), we get a palindrome (41345654314).

The spelling of 20323322012 in words is "twenty billion, three hundred twenty-three million, three hundred twenty-two thousand, twelve".