201223020 has 48 divisors (see below), whose sum is σ = 578658528. Its totient is φ = 52208640.

The previous prime is 201223019. The next prime is 201223031. The reversal of 201223020 is 20322102.

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 = 201222987 and 201223005.

It is an unprimeable number.

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, 43101 + ... + 47540.

It is an arithmetic number, because the mean of its divisors is an integer number (12055386).

Almost surely, 2^201223020 is an apocalyptic number.

201223020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201223020 is an abundant number, since it is smaller than the sum of its proper divisors (377435508).

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

201223020 is a wasteful number, since it uses less digits than its factorization.

201223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90690 (or 90688 counting only the distinct ones).

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

The square root of 201223020 is about 14185.3100071870. The cubic root of 201223020 is about 585.9931700990.

Adding to 201223020 its reverse (20322102), we get a palindrome (221545122).

The spelling of 201223020 in words is "two hundred one million, two hundred twenty-three thousand, twenty".