2013220131121 has 2 divisors, whose sum is σ = 2013220131122. Its totient is φ = 2013220131120.

The previous prime is 2013220131119. The next prime is 2013220131133. The reversal of 2013220131121 is 1211310223102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1964793727521 + 48426403600 = 1401711^2 + 220060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2013220131121 - 2¹ = 2013220131119 is a prime.

Together with 2013220131119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2013220131101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006610065560 + 1006610065561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006610065561).

Almost surely, 2^{2013220131121} is an apocalyptic number.

It is an amenable number.

2013220131121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013220131121 is an equidigital number, since it uses as much as digits as its factorization.

2013220131121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2013220131121 its reverse (1211310223102), we get a palindrome (3224530354223).

The spelling of 2013220131121 in words is "two trillion, thirteen billion, two hundred twenty million, one hundred thirty-one thousand, one hundred twenty-one".