111110001121021 has 32 divisors (see below), whose sum is σ = 131465681952768. Its totient is φ = 91930772914560.

The previous prime is 111110001121003. The next prime is 111110001121037. The reversal of 111110001121021 is 120121100011111.

It is a cyclic number.

It is not a de Polignac number, because 111110001121021 - 2³⁵ = 111075641382653 is a prime.

It is a super-2 number, since 2×111110001121021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111110001120992 and 111110001121010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111110001131021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 905163376 + ... + 905286118.

It is an arithmetic number, because the mean of its divisors is an integer number (4108302561024).

Almost surely, 2^{111110001121021} is an apocalyptic number.

It is an amenable number.

111110001121021 is a deficient number, since it is larger than the sum of its proper divisors (20355680831747).

111110001121021 is a wasteful number, since it uses less digits than its factorization.

111110001121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160561.

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

Adding to 111110001121021 its reverse (120121100011111), we get a palindrome (231231101132132).

The spelling of 111110001121021 in words is "one hundred eleven trillion, one hundred ten billion, one million, one hundred twenty-one thousand, twenty-one".