210023120057 has 2 divisors, whose sum is σ = 210023120058. Its totient is φ = 210023120056.

The previous prime is 210023120051. The next prime is 210023120059. The reversal of 210023120057 is 750021320012.

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., 163164292096 + 46858827961 = 403936^2 + 216469^2 .

It is a cyclic number.

It is not a de Polignac number, because 210023120057 - 2²⁰ = 210022071481 is a prime.

Together with 210023120059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210023120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011560028 + 105011560029.

It is an arithmetic number, because the mean of its divisors is an integer number (105011560029).

Almost surely, 2^210023120057 is an apocalyptic number.

It is an amenable number.

210023120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

210023120057 is an equidigital number, since it uses as much as digits as its factorization.

210023120057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

Adding to 210023120057 its reverse (750021320012), we get a palindrome (960044440069).

The spelling of 210023120057 in words is "two hundred ten billion, twenty-three million, one hundred twenty thousand, fifty-seven".