220134997 has 2 divisors, whose sum is σ = 220134998. Its totient is φ = 220134996.

The previous prime is 220134991. The next prime is 220135021. The reversal of 220134997 is 799431022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147646801 + 72488196 = 12151^2 + 8514^2 .

It is a cyclic number.

It is not a de Polignac number, because 220134997 - 2⁷ = 220134869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220134991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110067498 + 110067499.

It is an arithmetic number, because the mean of its divisors is an integer number (110067499).

Almost surely, 2^220134997 is an apocalyptic number.

It is an amenable number.

220134997 is a deficient number, since it is larger than the sum of its proper divisors (1).

220134997 is an equidigital number, since it uses as much as digits as its factorization.

220134997 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 37.

The square root of 220134997 is about 14836.9470242365. The cubic root of 220134997 is about 603.8045259078.

The spelling of 220134997 in words is "two hundred twenty million, one hundred thirty-four thousand, nine hundred ninety-seven".