2321022551 has 2 divisors, whose sum is σ = 2321022552. Its totient is φ = 2321022550.

The previous prime is 2321022503. The next prime is 2321022553. The reversal of 2321022551 is 1552201232.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321022551 is a prime.

It is a Sophie Germain prime.

Together with 2321022553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321022553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160511275 + 1160511276.

It is an arithmetic number, because the mean of its divisors is an integer number (1160511276).

Almost surely, 2^2321022551 is an apocalyptic number.

2321022551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321022551 is an equidigital number, since it uses as much as digits as its factorization.

2321022551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2321022551 is about 48176.9919256070. The cubic root of 2321022551 is about 1324.0156545263.

Adding to 2321022551 its reverse (1552201232), we get a palindrome (3873223783).

The spelling of 2321022551 in words is "two billion, three hundred twenty-one million, twenty-two thousand, five hundred fifty-one".