401221233 has 48 divisors (see below), whose sum is σ = 738241920. Its totient is φ = 204415488.

The previous prime is 401221231. The next prime is 401221237. The reversal of 401221233 is 332122104.

It is not a de Polignac number, because 401221233 - 2¹ = 401221231 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 10491 + ... + 30207.

It is an arithmetic number, because the mean of its divisors is an integer number (15380040).

Almost surely, 2^401221233 is an apocalyptic number.

It is an amenable number.

401221233 is a deficient number, since it is larger than the sum of its proper divisors (337020687).

401221233 is a wasteful number, since it uses less digits than its factorization.

401221233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19766 (or 19763 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 401221233 is about 20030.5075572238. The cubic root of 401221233 is about 737.5553813817. Note that the first 3 decimals are identical.

Adding to 401221233 its reverse (332122104), we get a palindrome (733343337).

The spelling of 401221233 in words is "four hundred one million, two hundred twenty-one thousand, two hundred thirty-three".