1110990109021 has 4 divisors (see below), whose sum is σ = 1196450886652. Its totient is φ = 1025529331392.

The previous prime is 1110990108929. The next prime is 1110990109043. The reversal of 1110990109021 is 1209010990111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 723435302500 + 387554806521 = 850550^2 + 622539^2 .

It is a cyclic number.

It is not a de Polignac number, because 1110990109021 - 2³⁹ = 561234295133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110990109321) 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, 42730388796 + ... + 42730388821.

It is an arithmetic number, because the mean of its divisors is an integer number (299112721663).

Almost surely, 2^{1110990109021} is an apocalyptic number.

It is an amenable number.

1110990109021 is a deficient number, since it is larger than the sum of its proper divisors (85460777631).

1110990109021 is an equidigital number, since it uses as much as digits as its factorization.

1110990109021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85460777630.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 1110990109021 in words is "one trillion, one hundred ten billion, nine hundred ninety million, one hundred nine thousand, twenty-one".