1220321230123 has 4 divisors (see below), whose sum is σ = 1220366942928. Its totient is φ = 1220275517320.

The previous prime is 1220321230091. The next prime is 1220321230127. The reversal of 1220321230123 is 3210321230221.

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 1220321230123 - 2⁵ = 1220321230091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220321230094 and 1220321230103.

It is not an unprimeable number, because it can be changed into a prime (1220321230127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22816336 + ... + 22869757.

It is an arithmetic number, because the mean of its divisors is an integer number (305091735732).

Almost surely, 2^{1220321230123} is an apocalyptic number.

1220321230123 is a deficient number, since it is larger than the sum of its proper divisors (45712805).

1220321230123 is an equidigital number, since it uses as much as digits as its factorization.

1220321230123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45712804.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1220321230123 its reverse (3210321230221), we get a palindrome (4430642460344).

The spelling of 1220321230123 in words is "one trillion, two hundred twenty billion, three hundred twenty-one million, two hundred thirty thousand, one hundred twenty-three".