201230220 has 48 divisors (see below), whose sum is σ = 587946240. Its totient is φ = 51327936.

The previous prime is 201230219. The next prime is 201230291. The reversal of 201230220 is 22032102.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 201230196 and 201230205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71530 + ... + 74289.

It is an arithmetic number, because the mean of its divisors is an integer number (12248880).

Almost surely, 2^201230220 is an apocalyptic number.

201230220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201230220 is an abundant number, since it is smaller than the sum of its proper divisors (386716020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201230220 is a wasteful number, since it uses less digits than its factorization.

201230220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145854 (or 145852 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 201230220 is about 14185.5637885845. The cubic root of 201230220 is about 586.0001591942. Note that the first 3 decimals are identical.

Adding to 201230220 its reverse (22032102), we get a palindrome (223262322).

The spelling of 201230220 in words is "two hundred one million, two hundred thirty thousand, two hundred twenty".