220302149 has 2 divisors, whose sum is σ = 220302150. Its totient is φ = 220302148.

The previous prime is 220302139. The next prime is 220302157. The reversal of 220302149 is 941203022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176411524 + 43890625 = 13282^2 + 6625^2 .

It is a cyclic number.

It is not a de Polignac number, because 220302149 - 2¹⁶ = 220236613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220302139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110151074 + 110151075.

It is an arithmetic number, because the mean of its divisors is an integer number (110151075).

Almost surely, 2^220302149 is an apocalyptic number.

It is an amenable number.

220302149 is a deficient number, since it is larger than the sum of its proper divisors (1).

220302149 is an equidigital number, since it uses as much as digits as its factorization.

220302149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 220302149 is about 14842.5789201203. The cubic root of 220302149 is about 603.9573133656.

The spelling of 220302149 in words is "two hundred twenty million, three hundred two thousand, one hundred forty-nine".