220111021297 has 2 divisors, whose sum is σ = 220111021298. Its totient is φ = 220111021296.

The previous prime is 220111021279. The next prime is 220111021301. The reversal of 220111021297 is 792120111022.

Together with previous prime (220111021279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193656324096 + 26454697201 = 440064^2 + 162649^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111021297 - 2²³ = 220102632689 is a prime.

It is not a weakly prime, because it can be changed into another prime (220111021997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055510648 + 110055510649.

It is an arithmetic number, because the mean of its divisors is an integer number (110055510649).

Almost surely, 2^220111021297 is an apocalyptic number.

It is an amenable number.

220111021297 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111021297 is an equidigital number, since it uses as much as digits as its factorization.

220111021297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 220111021297 in words is "two hundred twenty billion, one hundred eleven million, twenty-one thousand, two hundred ninety-seven".