2312442221 has 16 divisors (see below), whose sum is σ = 2492132544. Its totient is φ = 2137791744.

The previous prime is 2312442217. The next prime is 2312442227. The reversal of 2312442221 is 1222442132.

It is a cyclic number.

It is not a de Polignac number, because 2312442221 - 2² = 2312442217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312442227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422126 + ... + 427568.

It is an arithmetic number, because the mean of its divisors is an integer number (155758284).

Almost surely, 2^2312442221 is an apocalyptic number.

It is an amenable number.

2312442221 is a deficient number, since it is larger than the sum of its proper divisors (179690323).

2312442221 is a wasteful number, since it uses less digits than its factorization.

2312442221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900.

The product of its digits is 1536, while the sum is 23.

The square root of 2312442221 is about 48087.8593929902. The cubic root of 2312442221 is about 1322.3821045248.

Adding to 2312442221 its reverse (1222442132), we get a palindrome (3534884353).

The spelling of 2312442221 in words is "two billion, three hundred twelve million, four hundred forty-two thousand, two hundred twenty-one".