20312210012 has 6 divisors (see below), whose sum is σ = 35546367528. Its totient is φ = 10156105004.

The previous prime is 20312209999. The next prime is 20312210063. The reversal of 20312210012 is 21001221302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2539026248 + ... + 2539026255.

It is an arithmetic number, because the mean of its divisors is an integer number (5924394588).

Almost surely, 2^20312210012 is an apocalyptic number.

It is an amenable number.

20312210012 is a deficient number, since it is larger than the sum of its proper divisors (15234157516).

20312210012 is a wasteful number, since it uses less digits than its factorization.

20312210012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5078052507 (or 5078052505 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20312210012 its reverse (21001221302), we get a palindrome (41313431314).

The spelling of 20312210012 in words is "twenty billion, three hundred twelve million, two hundred ten thousand, twelve".