1110221131 has 4 divisors (see below), whose sum is σ = 1111724200. Its totient is φ = 1108718064.

The previous prime is 1110221087. The next prime is 1110221141. The reversal of 1110221131 is 1311220111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1311220111 = 173 ⋅7579307.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1110221131 is a prime.

It is a super-2 number, since 2×1110221131² = 2465181919437838322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110221141) 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, 750426 + ... + 751903.

It is an arithmetic number, because the mean of its divisors is an integer number (277931050).

Almost surely, 2^1110221131 is an apocalyptic number.

1110221131 is a deficient number, since it is larger than the sum of its proper divisors (1503069).

1110221131 is an equidigital number, since it uses as much as digits as its factorization.

1110221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503068.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1110221131 is about 33319.9809573775. The cubic root of 1110221131 is about 1035.4675572715.

Adding to 1110221131 its reverse (1311220111), we get a palindrome (2421441242).

The spelling of 1110221131 in words is "one billion, one hundred ten million, two hundred twenty-one thousand, one hundred thirty-one".