12120312220023 has 16 divisors (see below), whose sum is σ = 18470051479296. Its totient is φ = 6925516089600.

The previous prime is 12120312219991. The next prime is 12120312220033. The reversal of 12120312220023 is 32002221302121.

It is not a de Polignac number, because 12120312220023 - 2⁵ = 12120312219991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120312220033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15296361 + ... + 16069202.

It is an arithmetic number, because the mean of its divisors is an integer number (1154378217456).

Almost surely, 2^{12120312220023} is an apocalyptic number.

12120312220023 is a deficient number, since it is larger than the sum of its proper divisors (6349739259273).

12120312220023 is a wasteful number, since it uses less digits than its factorization.

12120312220023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31383974.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12120312220023 its reverse (32002221302121), we get a palindrome (44122533522144).

The spelling of 12120312220023 in words is "twelve trillion, one hundred twenty billion, three hundred twelve million, two hundred twenty thousand, twenty-three".