1222320023 has 4 divisors (see below), whose sum is σ = 1248326880. Its totient is φ = 1196313168.

The previous prime is 1222320019. The next prime is 1222320031. The reversal of 1222320023 is 3200232221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3200232221 = 181 ⋅17680841.

It is a cyclic number.

It is not a de Polignac number, because 1222320023 - 2² = 1222320019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222319983 and 1222320010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222320083) 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, 13003358 + ... + 13003451.

It is an arithmetic number, because the mean of its divisors is an integer number (312081720).

Almost surely, 2^1222320023 is an apocalyptic number.

1222320023 is a deficient number, since it is larger than the sum of its proper divisors (26006857).

1222320023 is an equidigital number, since it uses as much as digits as its factorization.

1222320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26006856.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1222320023 is about 34961.6936517669. The cubic root of 1222320023 is about 1069.2066273609.

Adding to 1222320023 its reverse (3200232221), we get a palindrome (4422552244).

The spelling of 1222320023 in words is "one billion, two hundred twenty-two million, three hundred twenty thousand, twenty-three".