2113213230121 has 4 divisors (see below), whose sum is σ = 2415100834432. Its totient is φ = 1811325625812.

The previous prime is 2113213230113. The next prime is 2113213230143. The reversal of 2113213230121 is 1210323123112.

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 2113213230121 - 2³ = 2113213230113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113213230092 and 2113213230101.

It is not an unprimeable number, because it can be changed into a prime (2113213230521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150943802145 + ... + 150943802158.

It is an arithmetic number, because the mean of its divisors is an integer number (603775208608).

Almost surely, 2^{2113213230121} is an apocalyptic number.

It is an amenable number.

2113213230121 is a deficient number, since it is larger than the sum of its proper divisors (301887604311).

2113213230121 is an equidigital number, since it uses as much as digits as its factorization.

2113213230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301887604310.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2113213230121 its reverse (1210323123112), we get a palindrome (3323536353233).

The spelling of 2113213230121 in words is "two trillion, one hundred thirteen billion, two hundred thirteen million, two hundred thirty thousand, one hundred twenty-one".