20130221322312 has 64 divisors (see below), whose sum is σ = 50416611409920. Its totient is φ = 6697936277568.

The previous prime is 20130221322271. The next prime is 20130221322413. The reversal of 20130221322312 is 21322312203102.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92645943 + ... + 92862969.

It is an arithmetic number, because the mean of its divisors is an integer number (787759553280).

Almost surely, 2^{20130221322312} is an apocalyptic number.

It is an amenable number.

20130221322312 is an abundant number, since it is smaller than the sum of its proper divisors (30286390087608).

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

20130221322312 is a wasteful number, since it uses less digits than its factorization.

20130221322312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224010 (or 224006 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20130221322312 its reverse (21322312203102), we get a palindrome (41452533525414).

The spelling of 20130221322312 in words is "twenty trillion, one hundred thirty billion, two hundred twenty-one million, three hundred twenty-two thousand, three hundred twelve".