101120111999 has 4 divisors (see below), whose sum is σ = 101120925720. Its totient is φ = 101119298280.

The previous prime is 101120111987. The next prime is 101120112013. The reversal of 101120111999 is 999111021101.

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 not a de Polignac number, because 101120111999 - 2¹² = 101120107903 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 (101120111969) 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, 177272 + ... + 483389.

It is an arithmetic number, because the mean of its divisors is an integer number (25280231430).

Almost surely, 2^101120111999 is an apocalyptic number.

101120111999 is a deficient number, since it is larger than the sum of its proper divisors (813721).

101120111999 is an equidigital number, since it uses as much as digits as its factorization.

101120111999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813720.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 101120111999 in words is "one hundred one billion, one hundred twenty million, one hundred eleven thousand, nine hundred ninety-nine".