220123501 has 16 divisors (see below), whose sum is σ = 250871040. Its totient is φ = 191600640.

The previous prime is 220123499. The next prime is 220123537. The reversal of 220123501 is 105321022.

It is a cyclic number.

It is not a de Polignac number, because 220123501 - 2¹ = 220123499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220123571) 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, 16045 + ... + 26413.

It is an arithmetic number, because the mean of its divisors is an integer number (15679440).

Almost surely, 2^220123501 is an apocalyptic number.

It is an amenable number.

220123501 is a deficient number, since it is larger than the sum of its proper divisors (30747539).

220123501 is a wasteful number, since it uses less digits than its factorization.

220123501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10476.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 220123501 is about 14836.5596079415. The cubic root of 220123501 is about 603.7940149974.

Adding to 220123501 its reverse (105321022), we get a palindrome (325444523).

The spelling of 220123501 in words is "two hundred twenty million, one hundred twenty-three thousand, five hundred one".