220111100999957 has 2 divisors, whose sum is σ = 220111100999958. Its totient is φ = 220111100999956.

The previous prime is 220111100999837. The next prime is 220111101000019. The reversal of 220111100999957 is 759999001111022.

220111100999957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218726322781201 + 1384778218756 = 14789399^2 + 1176766^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111100999957 - 2¹⁶ = 220111100934421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220111100999057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110055550499978 + 110055550499979.

It is an arithmetic number, because the mean of its divisors is an integer number (110055550499979).

Almost surely, 2^{220111100999957} is an apocalyptic number.

It is an amenable number.

220111100999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

220111100999957 is an equidigital number, since it uses as much as digits as its factorization.

220111100999957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 918540, while the sum is 56.

The spelling of 220111100999957 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred million, nine hundred ninety-nine thousand, nine hundred fifty-seven".