20120113201331 has 32 divisors (see below), whose sum is σ = 23698197492480. Its totient is φ = 16840752508800.

The previous prime is 20120113201303. The next prime is 20120113201333. The reversal of 20120113201331 is 13310231102102.

It is a happy number.

It is not a de Polignac number, because 20120113201331 - 2⁶ = 20120113201267 is a prime.

It is a super-2 number, since 2×20120113201331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120113201333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381824696 + ... + 381877386.

It is an arithmetic number, because the mean of its divisors is an integer number (740568671640).

Almost surely, 2^{20120113201331} is an apocalyptic number.

20120113201331 is a deficient number, since it is larger than the sum of its proper divisors (3578084291149).

20120113201331 is a wasteful number, since it uses less digits than its factorization.

20120113201331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59507.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20120113201331 its reverse (13310231102102), we get a palindrome (33430344303433).

The spelling of 20120113201331 in words is "twenty trillion, one hundred twenty billion, one hundred thirteen million, two hundred one thousand, three hundred thirty-one".