2113342321021 has 4 divisors (see below), whose sum is σ = 2113705007872. Its totient is φ = 2112979634172.

The previous prime is 2113342320953. The next prime is 2113342321037. The reversal of 2113342321021 is 1201232433112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2113342321021 - 2²⁹ = 2112805450109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113342331021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181334685 + ... + 181346338.

It is an arithmetic number, because the mean of its divisors is an integer number (528426251968).

Almost surely, 2^{2113342321021} is an apocalyptic number.

It is an amenable number.

2113342321021 is a deficient number, since it is larger than the sum of its proper divisors (362686851).

2113342321021 is an equidigital number, since it uses as much as digits as its factorization.

2113342321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362686850.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2113342321021 its reverse (1201232433112), we get a palindrome (3314574754133).

The spelling of 2113342321021 in words is "two trillion, one hundred thirteen billion, three hundred forty-two million, three hundred twenty-one thousand, twenty-one".