2220166994393 has 2 divisors, whose sum is σ = 2220166994394. Its totient is φ = 2220166994392.

The previous prime is 2220166994351. The next prime is 2220166994399. The reversal of 2220166994393 is 3934996610222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1439836804624 + 780330189769 = 1199932^2 + 883363^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220166994393 - 2³⁸ = 1945289087449 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220166994399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110083497196 + 1110083497197.

It is an arithmetic number, because the mean of its divisors is an integer number (1110083497197).

Almost surely, 2^{2220166994393} is an apocalyptic number.

It is an amenable number.

2220166994393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220166994393 is an equidigital number, since it uses as much as digits as its factorization.

2220166994393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7558272, while the sum is 56.

The spelling of 2220166994393 in words is "two trillion, two hundred twenty billion, one hundred sixty-six million, nine hundred ninety-four thousand, three hundred ninety-three".