2013321320121 has 32 divisors (see below), whose sum is σ = 2770158899200. Its totient is φ = 1299699255744.

The previous prime is 2013321320117. The next prime is 2013321320141. The reversal of 2013321320121 is 1210231233102.

It is not a de Polignac number, because 2013321320121 - 2² = 2013321320117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2013321320141) 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, 101452626 + ... + 101472468.

It is an arithmetic number, because the mean of its divisors is an integer number (86567465600).

Almost surely, 2^{2013321320121} is an apocalyptic number.

It is an amenable number.

2013321320121 is a deficient number, since it is larger than the sum of its proper divisors (756837579079).

2013321320121 is a wasteful number, since it uses less digits than its factorization.

2013321320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24205.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2013321320121 its reverse (1210231233102), we get a palindrome (3223552553223).

The spelling of 2013321320121 in words is "two trillion, thirteen billion, three hundred twenty-one million, three hundred twenty thousand, one hundred twenty-one".