111201201999 has 16 divisors (see below), whose sum is σ = 168760633440. Its totient is φ = 72325984320.

The previous prime is 111201201971. The next prime is 111201202039. The reversal of 111201201999 is 999102102111.

It is not a de Polignac number, because 111201201999 - 2⁹ = 111201201487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201201949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50225272 + ... + 50227485.

It is an arithmetic number, because the mean of its divisors is an integer number (10547539590).

Almost surely, 2^111201201999 is an apocalyptic number.

111201201999 is a deficient number, since it is larger than the sum of its proper divisors (57559431441).

111201201999 is a wasteful number, since it uses less digits than its factorization.

111201201999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100452807 (or 100452801 counting only the distinct ones).

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

The spelling of 111201201999 in words is "one hundred eleven billion, two hundred one million, two hundred one thousand, nine hundred ninety-nine".