210023120357 has 2 divisors, whose sum is σ = 210023120358. Its totient is φ = 210023120356.

The previous prime is 210023120309. The next prime is 210023120389. The reversal of 210023120357 is 753021320012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109914793156 + 100108327201 = 331534^2 + 316399^2 .

It is a cyclic number.

It is not a de Polignac number, because 210023120357 - 2¹⁶ = 210023054821 is a prime.

It is a super-2 number, since 2×210023120357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210023120057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011560178 + 105011560179.

It is an arithmetic number, because the mean of its divisors is an integer number (105011560179).

Almost surely, 2^210023120357 is an apocalyptic number.

It is an amenable number.

210023120357 is a deficient number, since it is larger than the sum of its proper divisors (1).

210023120357 is an equidigital number, since it uses as much as digits as its factorization.

210023120357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 210023120357 its reverse (753021320012), we get a palindrome (963044440369).

The spelling of 210023120357 in words is "two hundred ten billion, twenty-three million, one hundred twenty thousand, three hundred fifty-seven".