213111121199 has 4 divisors (see below), whose sum is σ = 213112052400. Its totient is φ = 213110190000.

The previous prime is 213111121163. The next prime is 213111121211. The reversal of 213111121199 is 991121111312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213111121199 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 (213111126199) 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, 141902 + ... + 668100.

It is an arithmetic number, because the mean of its divisors is an integer number (53278013100).

Almost surely, 2^213111121199 is an apocalyptic number.

213111121199 is a deficient number, since it is larger than the sum of its proper divisors (931201).

213111121199 is an equidigital number, since it uses as much as digits as its factorization.

213111121199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931200.

The product of its digits is 972, while the sum is 32.

The spelling of 213111121199 in words is "two hundred thirteen billion, one hundred eleven million, one hundred twenty-one thousand, one hundred ninety-nine".