221120300123 has 16 divisors (see below), whose sum is σ = 230474576640. Its totient is φ = 211969475424.

The previous prime is 221120300069. The next prime is 221120300171. The reversal of 221120300123 is 321003021122.

It is a cyclic number.

It is not a de Polignac number, because 221120300123 - 2⁶ = 221120300059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221128300123) 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, 1484090 + ... + 1626272.

It is an arithmetic number, because the mean of its divisors is an integer number (14404661040).

Almost surely, 2^221120300123 is an apocalyptic number.

221120300123 is a deficient number, since it is larger than the sum of its proper divisors (9354276517).

221120300123 is a wasteful number, since it uses less digits than its factorization.

221120300123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142898.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221120300123 its reverse (321003021122), we get a palindrome (542123321245).

The spelling of 221120300123 in words is "two hundred twenty-one billion, one hundred twenty million, three hundred thousand, one hundred twenty-three".