20331312123212 has 6 divisors (see below), whose sum is σ = 35579796215628. Its totient is φ = 10165656061604.

The previous prime is 20331312123191. The next prime is 20331312123233. The reversal of 20331312123212 is 21232121313302.

It is an interprime number because it is at equal distance from previous prime (20331312123191) and next prime (20331312123233).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2541414015398 + ... + 2541414015405.

It is an arithmetic number, because the mean of its divisors is an integer number (5929966035938).

Almost surely, 2^{20331312123212} is an apocalyptic number.

It is an amenable number.

20331312123212 is a deficient number, since it is larger than the sum of its proper divisors (15248484092416).

20331312123212 is a wasteful number, since it uses less digits than its factorization.

20331312123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082828030807 (or 5082828030805 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20331312123212 its reverse (21232121313302), we get a palindrome (41563433436514).

The spelling of 20331312123212 in words is "twenty trillion, three hundred thirty-one billion, three hundred twelve million, one hundred twenty-three thousand, two hundred twelve".