1120021243 has 16 divisors (see below), whose sum is σ = 1229944320. Its totient is φ = 1011477600.

The previous prime is 1120021211. The next prime is 1120021247. The reversal of 1120021243 is 3421200211.

It is a cyclic number.

It is not a de Polignac number, because 1120021243 - 2⁵ = 1120021211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120021247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1699248 + ... + 1699906.

It is an arithmetic number, because the mean of its divisors is an integer number (76871520).

Almost surely, 2^1120021243 is an apocalyptic number.

1120021243 is a deficient number, since it is larger than the sum of its proper divisors (109923077).

1120021243 is a wasteful number, since it uses less digits than its factorization.

1120021243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1120021243 is about 33466.7184378750. The cubic root of 1120021243 is about 1038.5053860521.

Adding to 1120021243 its reverse (3421200211), we get a palindrome (4541221454).

The spelling of 1120021243 in words is "one billion, one hundred twenty million, twenty-one thousand, two hundred forty-three".