220013123 has 16 divisors (see below), whose sum is σ = 245721600. Its totient is φ = 195293280.

The previous prime is 220013119. The next prime is 220013159. The reversal of 220013123 is 321310022.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 220013123 - 2² = 220013119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220013098 and 220013107.

It is not an unprimeable number, because it can be changed into a prime (220013113) 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, 138548 + ... + 140126.

It is an arithmetic number, because the mean of its divisors is an integer number (15357600).

Almost surely, 2^220013123 is an apocalyptic number.

220013123 is a deficient number, since it is larger than the sum of its proper divisors (25708477).

220013123 is a wasteful number, since it uses less digits than its factorization.

220013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 220013123 is about 14832.8393438343. The cubic root of 220013123 is about 603.6930766331.

Adding to 220013123 its reverse (321310022), we get a palindrome (541323145).

The spelling of 220013123 in words is "two hundred twenty million, thirteen thousand, one hundred twenty-three".