220232901 has 24 divisors (see below), whose sum is σ = 342145920. Its totient is φ = 125641152.

The previous prime is 220232891. The next prime is 220232911. The reversal of 220232901 is 109232022.

It is an interprime number because it is at equal distance from previous prime (220232891) and next prime (220232911).

It is not a de Polignac number, because 220232901 - 2⁵ = 220232869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220232911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165300 + ... + 166626.

It is an arithmetic number, because the mean of its divisors is an integer number (14256080).

Almost surely, 2^220232901 is an apocalyptic number.

220232901 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220232901 is a deficient number, since it is larger than the sum of its proper divisors (121913019).

220232901 is a wasteful number, since it uses less digits than its factorization.

220232901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2466 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 220232901 is about 14840.2459885273. The cubic root of 220232901 is about 603.8940257111.

Adding to 220232901 its reverse (109232022), we get a palindrome (329464923).

The spelling of 220232901 in words is "two hundred twenty million, two hundred thirty-two thousand, nine hundred one".