220011101957 has 2 divisors, whose sum is σ = 220011101958. Its totient is φ = 220011101956.

The previous prime is 220011101837. The next prime is 220011101987. The reversal of 220011101957 is 759101110022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190876367236 + 29134734721 = 436894^2 + 170689^2 .

It is a cyclic number.

It is not a de Polignac number, because 220011101957 - 2²⁰ = 220010053381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220011101987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110005550978 + 110005550979.

It is an arithmetic number, because the mean of its divisors is an integer number (110005550979).

Almost surely, 2^220011101957 is an apocalyptic number.

It is an amenable number.

220011101957 is a deficient number, since it is larger than the sum of its proper divisors (1).

220011101957 is an equidigital number, since it uses as much as digits as its factorization.

220011101957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 29.

Adding to 220011101957 its reverse (759101110022), we get a palindrome (979112211979).

The spelling of 220011101957 in words is "two hundred twenty billion, eleven million, one hundred one thousand, nine hundred fifty-seven".