221211112221179 has 2 divisors, whose sum is σ = 221211112221180. Its totient is φ = 221211112221178.

The previous prime is 221211112221139. The next prime is 221211112221221. The reversal of 221211112221179 is 971122211112122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221211112221179 is a prime.

It is not a weakly prime, because it can be changed into another prime (221211112221109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110605556110589 + 110605556110590.

It is an arithmetic number, because the mean of its divisors is an integer number (110605556110590).

Almost surely, 2^{221211112221179} is an apocalyptic number.

221211112221179 is a deficient number, since it is larger than the sum of its proper divisors (1).

221211112221179 is an equidigital number, since it uses as much as digits as its factorization.

221211112221179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 35.

The spelling of 221211112221179 in words is "two hundred twenty-one trillion, two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, one hundred seventy-nine".