1220233023231 has 4 divisors (see below), whose sum is σ = 1626977364312. Its totient is φ = 813488682152.

The previous prime is 1220233023179. The next prime is 1220233023271. The reversal of 1220233023231 is 1323203320221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1220233023231 - 2³⁰ = 1219159281407 is a prime.

It is a super-2 number, since 2×1220233023231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220233023271) 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, 203372170536 + ... + 203372170541.

It is an arithmetic number, because the mean of its divisors is an integer number (406744341078).

Almost surely, 2^{1220233023231} is an apocalyptic number.

1220233023231 is a deficient number, since it is larger than the sum of its proper divisors (406744341081).

1220233023231 is an equidigital number, since it uses as much as digits as its factorization.

1220233023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406744341080.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1220233023231 its reverse (1323203320221), we get a palindrome (2543436343452).

The spelling of 1220233023231 in words is "one trillion, two hundred twenty billion, two hundred thirty-three million, twenty-three thousand, two hundred thirty-one".