210123200269 has 2 divisors, whose sum is σ = 210123200270. Its totient is φ = 210123200268.

The previous prime is 210123200263. The next prime is 210123200303. The reversal of 210123200269 is 962002321012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153674192169 + 56449008100 = 392013^2 + 237590^2 .

It is a cyclic number.

It is not a de Polignac number, because 210123200269 - 2⁵ = 210123200237 is a prime.

It is a super-2 number, since 2×210123200269² (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 (210123200263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105061600134 + 105061600135.

It is an arithmetic number, because the mean of its divisors is an integer number (105061600135).

Almost surely, 2^210123200269 is an apocalyptic number.

It is an amenable number.

210123200269 is a deficient number, since it is larger than the sum of its proper divisors (1).

210123200269 is an equidigital number, since it uses as much as digits as its factorization.

210123200269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 210123200269 in words is "two hundred ten billion, one hundred twenty-three million, two hundred thousand, two hundred sixty-nine".