210123201199 has 4 divisors (see below), whose sum is σ = 210169703440. Its totient is φ = 210076698960.

The previous prime is 210123201173. The next prime is 210123201209. The reversal of 210123201199 is 991102321012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210123201199 - 2⁹ = 210123200687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210123201199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210123201499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23244342 + ... + 23253379.

It is an arithmetic number, because the mean of its divisors is an integer number (52542425860).

Almost surely, 2^210123201199 is an apocalyptic number.

210123201199 is a deficient number, since it is larger than the sum of its proper divisors (46502241).

210123201199 is an equidigital number, since it uses as much as digits as its factorization.

210123201199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46502240.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 210123201199 in words is "two hundred ten billion, one hundred twenty-three million, two hundred one thousand, one hundred ninety-nine".