1120110021 has 24 divisors (see below), whose sum is σ = 1704422720. Its totient is φ = 706885056.

The previous prime is 1120110001. The next prime is 1120110041. The reversal of 1120110021 is 1200110211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1120110001) and next prime (1120110041).

It is not a de Polignac number, because 1120110021 - 2⁵ = 1120109989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120109985 and 1120110012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120110001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 426705 + ... + 429321.

Almost surely, 2^1120110021 is an apocalyptic number.

It is an amenable number.

1120110021 is a deficient number, since it is larger than the sum of its proper divisors (584312699).

1120110021 is a wasteful number, since it uses less digits than its factorization.

1120110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145 (or 5142 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1120110021 is about 33468.0447740826. The cubic root of 1120110021 is about 1038.5328242207.

Adding to 1120110021 its reverse (1200110211), we get a palindrome (2320220232).

The spelling of 1120110021 in words is "one billion, one hundred twenty million, one hundred ten thousand, twenty-one".