2222213657 has 2 divisors, whose sum is σ = 2222213658. Its totient is φ = 2222213656.

The previous prime is 2222213597. The next prime is 2222213681. The reversal of 2222213657 is 7563122222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1620787081 + 601426576 = 40259^2 + 24524^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222213657 - 2¹⁰ = 2222212633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2222213687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111106828 + 1111106829.

It is an arithmetic number, because the mean of its divisors is an integer number (1111106829).

Almost surely, 2^2222213657 is an apocalyptic number.

It is an amenable number.

2222213657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222213657 is an equidigital number, since it uses as much as digits as its factorization.

2222213657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 2222213657 is about 47140.3612311149. The cubic root of 2222213657 is about 1304.9542038019.

Adding to 2222213657 its reverse (7563122222), we get a palindrome (9785335879).

The spelling of 2222213657 in words is "two billion, two hundred twenty-two million, two hundred thirteen thousand, six hundred fifty-seven".