1213222123023 has 4 divisors (see below), whose sum is σ = 1617629497368. Its totient is φ = 808814748680.

The previous prime is 1213222123021. The next prime is 1213222123109. The reversal of 1213222123023 is 3203212223121.

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 1213222123023 - 2¹ = 1213222123021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213222122984 and 1213222123002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213222123021) 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, 202203687168 + ... + 202203687173.

It is an arithmetic number, because the mean of its divisors is an integer number (404407374342).

Almost surely, 2^{1213222123023} is an apocalyptic number.

1213222123023 is a deficient number, since it is larger than the sum of its proper divisors (404407374345).

1213222123023 is an equidigital number, since it uses as much as digits as its factorization.

1213222123023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404407374344.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1213222123023 its reverse (3203212223121), we get a palindrome (4416434346144).

The spelling of 1213222123023 in words is "one trillion, two hundred thirteen billion, two hundred twenty-two million, one hundred twenty-three thousand, twenty-three".