400221003330 has 24 divisors (see below), whose sum is σ = 1040574608892. Its totient is φ = 106725600864.

The previous prime is 400221003311. The next prime is 400221003349. The reversal of 400221003330 is 33300122004.

It is an interprime number because it is at equal distance from previous prime (400221003311) and next prime (400221003349).

It can be written as a sum of positive squares in 2 ways, for example, as 389342304729 + 10878698601 = 623973^2 + 104301^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2223449929 + ... + 2223450108.

Almost surely, 2^400221003330 is an apocalyptic number.

400221003330 is an abundant number, since it is smaller than the sum of its proper divisors (640353605562).

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

400221003330 is a wasteful number, since it uses less digits than its factorization.

400221003330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446900050 (or 4446900047 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 400221003330 its reverse (33300122004), we get a palindrome (433521125334).

The spelling of 400221003330 in words is "four hundred billion, two hundred twenty-one million, three thousand, three hundred thirty".