111099121001 has 4 divisors (see below), whose sum is σ = 121199041104. Its totient is φ = 100999200900.

The previous prime is 111099120967. The next prime is 111099121033. The reversal of 111099121001 is 100121990111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111099121001 - 2²² = 111094926697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111099121201) 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, 5049960035 + ... + 5049960056.

It is an arithmetic number, because the mean of its divisors is an integer number (30299760276).

Almost surely, 2^111099121001 is an apocalyptic number.

111099121001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111099121001 is a deficient number, since it is larger than the sum of its proper divisors (10099920103).

111099121001 is a wasteful number, since it uses less digits than its factorization.

111099121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10099920102.

The product of its (nonzero) digits is 162, while the sum is 26.

The spelling of 111099121001 in words is "one hundred eleven billion, ninety-nine million, one hundred twenty-one thousand, one".