221013311191 has 2 divisors, whose sum is σ = 221013311192. Its totient is φ = 221013311190.

The previous prime is 221013311149. The next prime is 221013311231. The reversal of 221013311191 is 191113310122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221013311191 - 2¹³ = 221013302999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221013314191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506655595 + 110506655596.

It is an arithmetic number, because the mean of its divisors is an integer number (110506655596).

Almost surely, 2^221013311191 is an apocalyptic number.

221013311191 is a deficient number, since it is larger than the sum of its proper divisors (1).

221013311191 is an equidigital number, since it uses as much as digits as its factorization.

221013311191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 25.

The spelling of 221013311191 in words is "two hundred twenty-one billion, thirteen million, three hundred eleven thousand, one hundred ninety-one".