220023312123 has 16 divisors (see below), whose sum is σ = 298219776800. Its totient is φ = 144255271680.

The previous prime is 220023312101. The next prime is 220023312161. The reversal of 220023312123 is 321213320022.

It is a happy number.

It is not a de Polignac number, because 220023312123 - 2⁶ = 220023312059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220023312123.

It is not an unprimeable number, because it can be changed into a prime (220028312123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1138143 + ... + 1317351.

It is an arithmetic number, because the mean of its divisors is an integer number (18638736050).

Almost surely, 2^220023312123 is an apocalyptic number.

220023312123 is a deficient number, since it is larger than the sum of its proper divisors (78196464677).

220023312123 is a wasteful number, since it uses less digits than its factorization.

220023312123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185982.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 220023312123 its reverse (321213320022), we get a palindrome (541236632145).

It can be divided in two parts, 2200233 and 12123, that added together give a triangular number (2212356 = T₂₁₀₃).

The spelling of 220023312123 in words is "two hundred twenty billion, twenty-three million, three hundred twelve thousand, one hundred twenty-three".