220220238857 has 2 divisors, whose sum is σ = 220220238858. Its totient is φ = 220220238856.

The previous prime is 220220238809. The next prime is 220220238871. The reversal of 220220238857 is 758832022022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165690516601 + 54529722256 = 407051^2 + 233516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220220238857 is a prime.

It is not a weakly prime, because it can be changed into another prime (220220238757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110119428 + 110110119429.

It is an arithmetic number, because the mean of its divisors is an integer number (110110119429).

Almost surely, 2^220220238857 is an apocalyptic number.

It is an amenable number.

220220238857 is a deficient number, since it is larger than the sum of its proper divisors (1).

220220238857 is an equidigital number, since it uses as much as digits as its factorization.

220220238857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 220220238857 in words is "two hundred twenty billion, two hundred twenty million, two hundred thirty-eight thousand, eight hundred fifty-seven".