221111002222169 has 2 divisors, whose sum is σ = 221111002222170. Its totient is φ = 221111002222168.

The previous prime is 221111002222163. The next prime is 221111002222309. The reversal of 221111002222169 is 961222200111122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150794593224025 + 70316408998144 = 12279845^2 + 8385488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221111002222169 is a prime.

It is a super-2 number, since 2×221111002222169² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221111002222163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555501111084 + 110555501111085.

It is an arithmetic number, because the mean of its divisors is an integer number (110555501111085).

Almost surely, 2^{221111002222169} is an apocalyptic number.

It is an amenable number.

221111002222169 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111002222169 is an equidigital number, since it uses as much as digits as its factorization.

221111002222169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 221111002222169 in words is "two hundred twenty-one trillion, one hundred eleven billion, two million, two hundred twenty-two thousand, one hundred sixty-nine".