20110321131312 has 80 divisors (see below), whose sum is σ = 52866185613440. Its totient is φ = 6585965438976.

The previous prime is 20110321131311. The next prime is 20110321131319. The reversal of 20110321131312 is 21313112301102.

It is not an unprimeable number, because it can be changed into a prime (20110321131311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7030753 + ... + 9468480.

It is an arithmetic number, because the mean of its divisors is an integer number (660827320168).

Almost surely, 2^{20110321131312} is an apocalyptic number.

It is an amenable number.

20110321131312 is an abundant number, since it is smaller than the sum of its proper divisors (32755864482128).

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

20110321131312 is a wasteful number, since it uses less digits than its factorization.

20110321131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16499690 (or 16499684 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 20110321131312 its reverse (21313112301102), we get a palindrome (41423433432414).

The spelling of 20110321131312 in words is "twenty trillion, one hundred ten billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred twelve".