220123101 has 16 divisors (see below), whose sum is σ = 328834368. Its totient is φ = 129801600.

The previous prime is 220123093. The next prime is 220123109. The reversal of 220123101 is 101321022.

It is an interprime number because it is at equal distance from previous prime (220123093) and next prime (220123109).

It is not a de Polignac number, because 220123101 - 2³ = 220123093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88920 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (20552148).

Almost surely, 2^220123101 is an apocalyptic number.

It is an amenable number.

220123101 is a deficient number, since it is larger than the sum of its proper divisors (108711267).

220123101 is a wasteful number, since it uses less digits than its factorization.

220123101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180332.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 220123101 is about 14836.5461277212. The cubic root of 220123101 is about 603.7936492667.

Adding to 220123101 its reverse (101321022), we get a palindrome (321444123).

It can be divided in two parts, 220 and 123101, that added together give a palindrome (123321).

The spelling of 220123101 in words is "two hundred twenty million, one hundred twenty-three thousand, one hundred one".