20321123031112 has 32 divisors (see below), whose sum is σ = 38122107847200. Its totient is φ = 10155228854400.

The previous prime is 20321123031029. The next prime is 20321123031127. The reversal of 20321123031112 is 21113032112302.

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, 137967187 + ... + 138114397.

It is an arithmetic number, because the mean of its divisors is an integer number (1191315870225).

Almost surely, 2^{20321123031112} is an apocalyptic number.

It is an amenable number.

20321123031112 is a deficient number, since it is larger than the sum of its proper divisors (17800984816088).

20321123031112 is a wasteful number, since it uses less digits than its factorization.

20321123031112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156157 (or 156153 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20321123031112 its reverse (21113032112302), we get a palindrome (41434155143414).

The spelling of 20321123031112 in words is "twenty trillion, three hundred twenty-one billion, one hundred twenty-three million, thirty-one thousand, one hundred twelve".