220220200997 has 2 divisors, whose sum is σ = 220220200998. Its totient is φ = 220220200996.

The previous prime is 220220200979. The next prime is 220220201017. The reversal of 220220200997 is 799002022022.

Together with previous prime (220220200979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110628746881 + 109591454116 = 332609^2 + 331046^2 .

It is a cyclic number.

It is not a de Polignac number, because 220220200997 - 2²⁰ = 220219152421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220220200097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110100498 + 110110100499.

It is an arithmetic number, because the mean of its divisors is an integer number (110110100499).

Almost surely, 2^220220200997 is an apocalyptic number.

It is an amenable number.

220220200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220200997 is an equidigital number, since it uses as much as digits as its factorization.

220220200997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 220220200997 in words is "two hundred twenty billion, two hundred twenty million, two hundred thousand, nine hundred ninety-seven".