221011031159 has 2 divisors, whose sum is σ = 221011031160. Its totient is φ = 221011031158.

The previous prime is 221011031099. The next prime is 221011031161. The reversal of 221011031159 is 951130110122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221011031159 is a prime.

It is a Sophie Germain prime.

Together with 221011031161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221011034159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505515579 + 110505515580.

It is an arithmetic number, because the mean of its divisors is an integer number (110505515580).

Almost surely, 2^221011031159 is an apocalyptic number.

221011031159 is a deficient number, since it is larger than the sum of its proper divisors (1).

221011031159 is an equidigital number, since it uses as much as digits as its factorization.

221011031159 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The spelling of 221011031159 in words is "two hundred twenty-one billion, eleven million, thirty-one thousand, one hundred fifty-nine".