221157059 has 2 divisors, whose sum is σ = 221157060. Its totient is φ = 221157058.

The previous prime is 221157037. The next prime is 221157061. The reversal of 221157059 is 950751122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221157059 - 2¹² = 221152963 is a prime.

Together with 221157061, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221157089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110578529 + 110578530.

It is an arithmetic number, because the mean of its divisors is an integer number (110578530).

Almost surely, 2^221157059 is an apocalyptic number.

221157059 is a deficient number, since it is larger than the sum of its proper divisors (1).

221157059 is an equidigital number, since it uses as much as digits as its factorization.

221157059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6300, while the sum is 32.

The square root of 221157059 is about 14871.3502749414. The cubic root of 221157059 is about 604.7375488922.

The spelling of 221157059 in words is "two hundred twenty-one million, one hundred fifty-seven thousand, fifty-nine".