1121222023 has 4 divisors (see below), whose sum is σ = 1124874520. Its totient is φ = 1117569528.

The previous prime is 1121221999. The next prime is 1121222051. The reversal of 1121222023 is 3202221211.

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: 3202221211 = 7 ⋅457460173.

It is a cyclic number.

It is not a de Polignac number, because 1121222023 - 2⁹ = 1121221511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121221988 and 1121222006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121222093) 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, 1825788 + ... + 1826401.

It is an arithmetic number, because the mean of its divisors is an integer number (281218630).

Almost surely, 2^1121222023 is an apocalyptic number.

1121222023 is a deficient number, since it is larger than the sum of its proper divisors (3652497).

1121222023 is an equidigital number, since it uses as much as digits as its factorization.

1121222023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652496.

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

The square root of 1121222023 is about 33484.6535445717. The cubic root of 1121222023 is about 1038.8763823245.

Adding to 1121222023 its reverse (3202221211), we get a palindrome (4323443234).

The spelling of 1121222023 in words is "one billion, one hundred twenty-one million, two hundred twenty-two thousand, twenty-three".