201040220 has 24 divisors (see below), whose sum is σ = 432483408. Its totient is φ = 78454400.

The previous prime is 201040153. The next prime is 201040237. The reversal of 201040220 is 22040102.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 121766 + ... + 123405.

It is an arithmetic number, because the mean of its divisors is an integer number (18020142).

Almost surely, 2^201040220 is an apocalyptic number.

201040220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201040220 is an abundant number, since it is smaller than the sum of its proper divisors (231443188).

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

201040220 is a wasteful number, since it uses less digits than its factorization.

201040220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245221 (or 245219 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 201040220 is about 14178.8652578406. The cubic root of 201040220 is about 585.8156688614.

Adding to 201040220 its reverse (22040102), we get a palindrome (223080322).

The spelling of 201040220 in words is "two hundred one million, forty thousand, two hundred twenty".