1390222111997 has 2 divisors, whose sum is σ = 1390222111998. Its totient is φ = 1390222111996.

The previous prime is 1390222111919. The next prime is 1390222112029. The reversal of 1390222111997 is 7991112220931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252595209636 + 137626902361 = 1119194^2 + 370981^2 .

It is a cyclic number.

It is not a de Polignac number, because 1390222111997 - 2³⁴ = 1373042242813 is a prime.

It is a super-2 number, since 2×1390222111997² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1390222111907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695111055998 + 695111055999.

It is an arithmetic number, because the mean of its divisors is an integer number (695111055999).

Almost surely, 2^{1390222111997} is an apocalyptic number.

It is an amenable number.

1390222111997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1390222111997 is an equidigital number, since it uses as much as digits as its factorization.

1390222111997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The spelling of 1390222111997 in words is "one trillion, three hundred ninety billion, two hundred twenty-two million, one hundred eleven thousand, nine hundred ninety-seven".