210200111993 has 4 divisors (see below), whose sum is σ = 210229604340. Its totient is φ = 210170619648.

The previous prime is 210200111987. The next prime is 210200112011. The reversal of 210200111993 is 399111002012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 153121168249 + 57078943744 = 391307^2 + 238912^2 .

It is a cyclic number.

It is not a de Polignac number, because 210200111993 - 2³⁴ = 193020242809 is a prime.

It is a super-5 number, since 5×210200111993⁵ (a number of 58 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210200111903) 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, 14735480 + ... + 14749737.

It is an arithmetic number, because the mean of its divisors is an integer number (52557401085).

Almost surely, 2^210200111993 is an apocalyptic number.

It is an amenable number.

210200111993 is a deficient number, since it is larger than the sum of its proper divisors (29492347).

210200111993 is an equidigital number, since it uses as much as digits as its factorization.

210200111993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29492346.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 210200111993 in words is "two hundred ten billion, two hundred million, one hundred eleven thousand, nine hundred ninety-three".