401200220 has 24 divisors (see below), whose sum is σ = 843700704. Its totient is φ = 160255296.

The previous prime is 401200199. The next prime is 401200223. The reversal of 401200220 is 22002104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401200223) by changing a digit.

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, 977 + ... + 28343.

It is an arithmetic number, because the mean of its divisors is an integer number (35154196).

Almost surely, 2^401200220 is an apocalyptic number.

It is an amenable number.

401200220 is an abundant number, since it is smaller than the sum of its proper divisors (442500484).

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

401200220 is a wasteful number, since it uses less digits than its factorization.

401200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28109 (or 28107 counting only the distinct ones).

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

The square root of 401200220 is about 20029.9830254546. The cubic root of 401200220 is about 737.5425052587.

Adding to 401200220 its reverse (22002104), we get a palindrome (423202324).

The spelling of 401200220 in words is "four hundred one million, two hundred thousand, two hundred twenty".