441231221000 has 64 divisors (see below), whose sum is σ = 1036499096880. Its totient is φ = 175805644800.

The previous prime is 441231220949. The next prime is 441231221003. The reversal of 441231221000 is 122132144.

It can be written as a sum of positive squares in 8 ways, for example, as 225873968644 + 215357252356 = 475262^2 + 464066^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (441231221003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601427 + ... + 1115426.

Almost surely, 2^441231221000 is an apocalyptic number.

441231221000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

441231221000 is an abundant number, since it is smaller than the sum of its proper divisors (595267875880).

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

441231221000 is a wasteful number, since it uses less digits than its factorization.

441231221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717131 (or 1717117 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 441231221000 its reverse (122132144), we get a palindrome (441353353144).

The spelling of 441231221000 in words is "four hundred forty-one billion, two hundred thirty-one million, two hundred twenty-one thousand".