221113037 has 2 divisors, whose sum is σ = 221113038. Its totient is φ = 221113036.

The previous prime is 221112977. The next prime is 221113043. The reversal of 221113037 is 730311122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212984836 + 8128201 = 14594^2 + 2851^2 .

It is a cyclic number.

It is not a de Polignac number, because 221113037 - 2⁸ = 221112781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221116037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556518 + 110556519.

It is an arithmetic number, because the mean of its divisors is an integer number (110556519).

Almost surely, 2^221113037 is an apocalyptic number.

It is an amenable number.

221113037 is a deficient number, since it is larger than the sum of its proper divisors (1).

221113037 is an equidigital number, since it uses as much as digits as its factorization.

221113037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 221113037 is about 14869.8701070319. The cubic root of 221113037 is about 604.6974212667.

Adding to 221113037 its reverse (730311122), we get a palindrome (951424159).

The spelling of 221113037 in words is "two hundred twenty-one million, one hundred thirteen thousand, thirty-seven".