2215663222397 has 2 divisors, whose sum is σ = 2215663222398. Its totient is φ = 2215663222396.

The previous prime is 2215663222309. The next prime is 2215663222417. The reversal of 2215663222397 is 7932223665122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1796942931001 + 418720291396 = 1340501^2 + 647086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2215663222397 - 2³⁰ = 2214589480573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2215663222307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1107831611198 + 1107831611199.

It is an arithmetic number, because the mean of its divisors is an integer number (1107831611199).

Almost surely, 2^{2215663222397} is an apocalyptic number.

It is an amenable number.

2215663222397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2215663222397 is an equidigital number, since it uses as much as digits as its factorization.

2215663222397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 50.

The spelling of 2215663222397 in words is "two trillion, two hundred fifteen billion, six hundred sixty-three million, two hundred twenty-two thousand, three hundred ninety-seven".