2552351322221 has 2 divisors, whose sum is σ = 2552351322222. Its totient is φ = 2552351322220.

The previous prime is 2552351322181. The next prime is 2552351322229. The reversal of 2552351322221 is 1222231532552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1928448806596 + 623902515625 = 1388686^2 + 789875^2 .

It is a cyclic number.

It is not a de Polignac number, because 2552351322221 - 2²² = 2552347127917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2552351322229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276175661110 + 1276175661111.

It is an arithmetic number, because the mean of its divisors is an integer number (1276175661111).

Almost surely, 2^{2552351322221} is an apocalyptic number.

It is an amenable number.

2552351322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2552351322221 is an equidigital number, since it uses as much as digits as its factorization.

2552351322221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 35.

Adding to 2552351322221 its reverse (1222231532552), we get a palindrome (3774582854773).

The spelling of 2552351322221 in words is "two trillion, five hundred fifty-two billion, three hundred fifty-one million, three hundred twenty-two thousand, two hundred twenty-one".