1220994192571 has 2 divisors, whose sum is σ = 1220994192572. Its totient is φ = 1220994192570.

The previous prime is 1220994192563. The next prime is 1220994192577. The reversal of 1220994192571 is 1752914990221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220994192571 - 2³ = 1220994192563 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220994192577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610497096285 + 610497096286.

It is an arithmetic number, because the mean of its divisors is an integer number (610497096286).

Almost surely, 2^{1220994192571} is an apocalyptic number.

1220994192571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220994192571 is an equidigital number, since it uses as much as digits as its factorization.

1220994192571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 52.

The spelling of 1220994192571 in words is "one trillion, two hundred twenty billion, nine hundred ninety-four million, one hundred ninety-two thousand, five hundred seventy-one".