220185701 has 2 divisors, whose sum is σ = 220185702. Its totient is φ = 220185700.

The previous prime is 220185677. The next prime is 220185709. The reversal of 220185701 is 107581022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216855076 + 3330625 = 14726^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 220185701 - 2¹⁰ = 220184677 is a prime.

It is a super-2 number, since 2×220185701² = 96963485849722802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220185709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110092850 + 110092851.

It is an arithmetic number, because the mean of its divisors is an integer number (110092851).

Almost surely, 2^220185701 is an apocalyptic number.

It is an amenable number.

220185701 is a deficient number, since it is larger than the sum of its proper divisors (1).

220185701 is an equidigital number, since it uses as much as digits as its factorization.

220185701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 220185701 is about 14838.6556331765. The cubic root of 220185701 is about 603.8508807277.

The spelling of 220185701 in words is "two hundred twenty million, one hundred eighty-five thousand, seven hundred one".