1120023021 has 32 divisors (see below), whose sum is σ = 1656911872. Its totient is φ = 668606400.

The previous prime is 1120022971. The next prime is 1120023029. The reversal of 1120023021 is 1203200211.

It is not a de Polignac number, because 1120023021 - 2⁶ = 1120022957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120022988 and 1120023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120023029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251016 + ... + 255438.

It is an arithmetic number, because the mean of its divisors is an integer number (51778496).

Almost surely, 2^1120023021 is an apocalyptic number.

It is an amenable number.

1120023021 is a deficient number, since it is larger than the sum of its proper divisors (536888851).

1120023021 is a wasteful number, since it uses less digits than its factorization.

1120023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4633.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1120023021 is about 33466.7450015683. The cubic root of 1120023021 is about 1038.5059355838.

Adding to 1120023021 its reverse (1203200211), we get a palindrome (2323223232).

The spelling of 1120023021 in words is "one billion, one hundred twenty million, twenty-three thousand, twenty-one".