111201100211999 has 4 divisors (see below), whose sum is σ = 127086971670864. Its totient is φ = 95315228753136.

The previous prime is 111201100211923. The next prime is 111201100212019. The reversal of 111201100211999 is 999112001102111.

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

It is not a de Polignac number, because 111201100211999 - 2¹⁶ = 111201100146463 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 (111201100211099) 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, 7942935729422 + ... + 7942935729435.

It is an arithmetic number, because the mean of its divisors is an integer number (31771742917716).

Almost surely, 2^{111201100211999} is an apocalyptic number.

111201100211999 is a deficient number, since it is larger than the sum of its proper divisors (15885871458865).

111201100211999 is an equidigital number, since it uses as much as digits as its factorization.

111201100211999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15885871458864.

The product of its (nonzero) digits is 2916, while the sum is 38.

The spelling of 111201100211999 in words is "one hundred eleven trillion, two hundred one billion, one hundred million, two hundred eleven thousand, nine hundred ninety-nine".