401221232 has 20 divisors (see below), whose sum is σ = 781318296. Its totient is φ = 199590720.

The previous prime is 401221231. The next prime is 401221237. The reversal of 401221232 is 232122104.

It is a self number, because there is not a number n which added to its sum of digits gives 401221232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401221231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60494 + ... + 66797.

Almost surely, 2^401221232 is an apocalyptic number.

It is an amenable number.

401221232 is a deficient number, since it is larger than the sum of its proper divisors (380097064).

401221232 is a wasteful number, since it uses less digits than its factorization.

401221232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127496 (or 127490 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 401221232 is about 20030.5075322619. The cubic root of 401221232 is about 737.5553807689. Note that the first 3 decimals are identical.

Adding to 401221232 its reverse (232122104), we get a palindrome (633343336).

The spelling of 401221232 in words is "four hundred one million, two hundred twenty-one thousand, two hundred thirty-two".