221826222193207 has 2 divisors, whose sum is σ = 221826222193208. Its totient is φ = 221826222193206.

The previous prime is 221826222193181. The next prime is 221826222193231. The reversal of 221826222193207 is 702391222628122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221826222193207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221826222193237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110913111096603 + 110913111096604.

It is an arithmetic number, because the mean of its divisors is an integer number (110913111096604).

Almost surely, 2^{221826222193207} is an apocalyptic number.

221826222193207 is a deficient number, since it is larger than the sum of its proper divisors (1).

221826222193207 is an equidigital number, since it uses as much as digits as its factorization.

221826222193207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 221826222193207 in words is "two hundred twenty-one trillion, eight hundred twenty-six billion, two hundred twenty-two million, one hundred ninety-three thousand, two hundred seven".