111121120011001 has 4 divisors (see below), whose sum is σ = 116969600011600. Its totient is φ = 105272640010404.

The previous prime is 111121120010981. The next prime is 111121120011049. The reversal of 111121120011001 is 100110021121111.

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 111121120011001 - 2⁵ = 111121120010969 is a prime.

It is a super-2 number, since 2×111121120011001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111121120011901) 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, 2924240000271 + ... + 2924240000308.

It is an arithmetic number, because the mean of its divisors is an integer number (29242400002900).

Almost surely, 2^{111121120011001} is an apocalyptic number.

It is an amenable number.

111121120011001 is a deficient number, since it is larger than the sum of its proper divisors (5848480000599).

111121120011001 is an equidigital number, since it uses as much as digits as its factorization.

111121120011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5848480000598.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111121120011001 its reverse (100110021121111), we get a palindrome (211231141132112).

The spelling of 111121120011001 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred twenty million, eleven thousand, one".