20110311321012 has 72 divisors (see below), whose sum is σ = 58374428417760. Its totient is φ = 5773295113920.

The previous prime is 20110311320989. The next prime is 20110311321017. The reversal of 20110311321012 is 21012311301102.

20110311321012 is a `hidden beast` number, since 20 + 1 + 1 + 0 + 311 + 321 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110311321017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1336403383 + ... + 1336418430.

Almost surely, 2^{20110311321012} is an apocalyptic number.

20110311321012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20110311321012 is an abundant number, since it is smaller than the sum of its proper divisors (38264117096748).

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

20110311321012 is a wasteful number, since it uses less digits than its factorization.

20110311321012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2672821853 (or 2672821848 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20110311321012 its reverse (21012311301102), we get a palindrome (41122622622114).

The spelling of 20110311321012 in words is "twenty trillion, one hundred ten billion, three hundred eleven million, three hundred twenty-one thousand, twelve".