2345221121 has 4 divisors (see below), whose sum is σ = 2345382192. Its totient is φ = 2345060052.

The previous prime is 2345221103. The next prime is 2345221127. The reversal of 2345221121 is 1211225432.

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-2345221121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2345221127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56255 + ... + 88628.

It is an arithmetic number, because the mean of its divisors is an integer number (586345548).

Almost surely, 2^2345221121 is an apocalyptic number.

It is an amenable number.

2345221121 is a deficient number, since it is larger than the sum of its proper divisors (161071).

2345221121 is a wasteful number, since it uses less digits than its factorization.

2345221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161070.

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

The square root of 2345221121 is about 48427.4831165114. The cubic root of 2345221121 is about 1328.6010732326.

Adding to 2345221121 its reverse (1211225432), we get a palindrome (3556446553).

The spelling of 2345221121 in words is "two billion, three hundred forty-five million, two hundred twenty-one thousand, one hundred twenty-one".