2542213121 has 4 divisors (see below), whose sum is σ = 2905386432. Its totient is φ = 2179039812.

The previous prime is 2542213087. The next prime is 2542213139. The reversal of 2542213121 is 1213122452.

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 a de Polignac number, because none of the positive numbers 2^k-2542213121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2542213171) 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, 181586645 + ... + 181586658.

It is an arithmetic number, because the mean of its divisors is an integer number (726346608).

Almost surely, 2^2542213121 is an apocalyptic number.

It is an amenable number.

2542213121 is a deficient number, since it is larger than the sum of its proper divisors (363173311).

2542213121 is an equidigital number, since it uses as much as digits as its factorization.

2542213121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363173310.

The product of its digits is 960, while the sum is 23.

The square root of 2542213121 is about 50420.3641498155. The cubic root of 2542213121 is about 1364.8051479793.

Adding to 2542213121 its reverse (1213122452), we get a palindrome (3755335573).

The spelling of 2542213121 in words is "two billion, five hundred forty-two million, two hundred thirteen thousand, one hundred twenty-one".