2213120557 has 2 divisors, whose sum is σ = 2213120558. Its totient is φ = 2213120556.

The previous prime is 2213120423. The next prime is 2213120561. The reversal of 2213120557 is 7550213122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1287804996 + 925315561 = 35886^2 + 30419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2213120557 - 2²⁷ = 2078902829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2211120557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106560278 + 1106560279.

It is an arithmetic number, because the mean of its divisors is an integer number (1106560279).

Almost surely, 2^2213120557 is an apocalyptic number.

It is an amenable number.

2213120557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2213120557 is an equidigital number, since it uses as much as digits as its factorization.

2213120557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2213120557 is about 47043.8152895787. The cubic root of 2213120557 is about 1303.1718517906.

Adding to 2213120557 its reverse (7550213122), we get a palindrome (9763333679).

The spelling of 2213120557 in words is "two billion, two hundred thirteen million, one hundred twenty thousand, five hundred fifty-seven".