1110990221 has 4 divisors (see below), whose sum is σ = 1211989344. Its totient is φ = 1009991100.

The previous prime is 1110990169. The next prime is 1110990241. The reversal of 1110990221 is 1220990111.

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 1110990221 - 2¹⁰ = 1110989197 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 (1110990241) 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, 50499545 + ... + 50499566.

It is an arithmetic number, because the mean of its divisors is an integer number (302997336).

Almost surely, 2^1110990221 is an apocalyptic number.

1110990221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1110990221 is a deficient number, since it is larger than the sum of its proper divisors (100999123).

1110990221 is a wasteful number, since it uses less digits than its factorization.

1110990221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100999122.

The product of its (nonzero) digits is 324, while the sum is 26.

The square root of 1110990221 is about 33331.5199323403. The cubic root of 1110990221 is about 1035.7066039206.

The spelling of 1110990221 in words is "one billion, one hundred ten million, nine hundred ninety thousand, two hundred twenty-one".