1110111111021 has 16 divisors (see below), whose sum is σ = 1619333755200. Its totient is φ = 670866827520.

The previous prime is 1110111110987. The next prime is 1110111111023. The reversal of 1110111111021 is 1201111110111.

It is not a de Polignac number, because 1110111111021 - 2⁶ = 1110111110957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1110111110988 and 1110111111006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110111111023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48182940 + ... + 48205973.

It is an arithmetic number, because the mean of its divisors is an integer number (101208359700).

Almost surely, 2^{1110111111021} is an apocalyptic number.

1110111111021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1110111111021 is a deficient number, since it is larger than the sum of its proper divisors (509222644179).

1110111111021 is a wasteful number, since it uses less digits than its factorization.

1110111111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96389276.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 1110111111021 its reverse (1201111110111), we get a palindrome (2311222221132).

The spelling of 1110111111021 in words is "one trillion, one hundred ten billion, one hundred eleven million, one hundred eleven thousand, twenty-one".