2223101211997 has 2 divisors, whose sum is σ = 2223101211998. Its totient is φ = 2223101211996.

The previous prime is 2223101211973. The next prime is 2223101212063. The reversal of 2223101211997 is 7991121013222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2221667756676 + 1433455321 = 1490526^2 + 37861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2223101211997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2223101211197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111550605998 + 1111550605999.

It is an arithmetic number, because the mean of its divisors is an integer number (1111550605999).

Almost surely, 2^{2223101211997} is an apocalyptic number.

It is an amenable number.

2223101211997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223101211997 is an equidigital number, since it uses as much as digits as its factorization.

2223101211997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 2223101211997 in words is "two trillion, two hundred twenty-three billion, one hundred one million, two hundred eleven thousand, nine hundred ninety-seven".