20130101220312 has 80 divisors (see below), whose sum is σ = 56397323925360. Its totient is φ = 6708319839936.

The previous prime is 20130101220253. The next prime is 20130101220331. The reversal of 20130101220312 is 21302210103102.

20130101220312 is a `hidden beast` number, since 2 + 0 + 1 + 30 + 101 + 220 + 312 = 666.

It is a super-2 number, since 2×20130101220312² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1427188 + ... + 6503619.

It is an arithmetic number, because the mean of its divisors is an integer number (704966549067).

Almost surely, 2^{20130101220312} is an apocalyptic number.

It is an amenable number.

20130101220312 is an abundant number, since it is smaller than the sum of its proper divisors (36267222705048).

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

20130101220312 is a wasteful number, since it uses less digits than its factorization.

20130101220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7934742 (or 7934729 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20130101220312 its reverse (21302210103102), we get a palindrome (41432311323414).

The spelling of 20130101220312 in words is "twenty trillion, one hundred thirty billion, one hundred one million, two hundred twenty thousand, three hundred twelve".