1120012121 has 4 divisors (see below), whose sum is σ = 1130479632. Its totient is φ = 1109544612.

The previous prime is 1120012093. The next prime is 1120012123. The reversal of 1120012121 is 1212100211.

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 a de Polignac number, because none of the positive numbers 2^k-1120012121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1120012123) 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, 5233595 + ... + 5233808.

It is an arithmetic number, because the mean of its divisors is an integer number (282619908).

Almost surely, 2^1120012121 is an apocalyptic number.

It is an amenable number.

1120012121 is a deficient number, since it is larger than the sum of its proper divisors (10467511).

1120012121 is a wasteful number, since it uses less digits than its factorization.

1120012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10467510.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1120012121 is about 33466.5821529477. The cubic root of 1120012121 is about 1038.5025666794.

Adding to 1120012121 its reverse (1212100211), we get a palindrome (2332112332).

The spelling of 1120012121 in words is "one billion, one hundred twenty million, twelve thousand, one hundred twenty-one".