111101210001 has 24 divisors (see below), whose sum is σ = 161570433024. Its totient is φ = 73565268000.

The previous prime is 111101209963. The next prime is 111101210021. The reversal of 111101210001 is 100012101111.

It is not a de Polignac number, because 111101210001 - 2⁶ = 111101209937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (111101210021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 987376 + ... + 1094126.

It is an arithmetic number, because the mean of its divisors is an integer number (6732101376).

Almost surely, 2^111101210001 is an apocalyptic number.

It is an amenable number.

111101210001 is a deficient number, since it is larger than the sum of its proper divisors (50469223023).

111101210001 is a wasteful number, since it uses less digits than its factorization.

111101210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107541 (or 107538 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111101210001 its reverse (100012101111), we get a palindrome (211113311112).

The spelling of 111101210001 in words is "one hundred eleven billion, one hundred one million, two hundred ten thousand, one".