210111201999 has 12 divisors (see below), whose sum is σ = 303609962656. Its totient is φ = 140020594272.

The previous prime is 210111201941. The next prime is 210111202009. The reversal of 210111201999 is 999102111012.

It is not a de Polignac number, because 210111201999 - 2¹² = 210111197903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111201919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4436839 + ... + 4483944.

Almost surely, 2^210111201999 is an apocalyptic number.

210111201999 is a deficient number, since it is larger than the sum of its proper divisors (93498760657).

210111201999 is a wasteful number, since it uses less digits than its factorization.

210111201999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8923406 (or 8923403 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 210111201999 in words is "two hundred ten billion, one hundred eleven million, two hundred one thousand, nine hundred ninety-nine".