400104412221 has 32 divisors (see below), whose sum is σ = 568808916480. Its totient is φ = 249436324800.

The previous prime is 400104412219. The next prime is 400104412249. The reversal of 400104412221 is 122214401004.

It is not a de Polignac number, because 400104412221 - 2¹ = 400104412219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400104412021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5503891 + ... + 5576111.

It is an arithmetic number, because the mean of its divisors is an integer number (17775278640).

Almost surely, 2^400104412221 is an apocalyptic number.

It is an amenable number.

400104412221 is a deficient number, since it is larger than the sum of its proper divisors (168704504259).

400104412221 is a wasteful number, since it uses less digits than its factorization.

400104412221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73497.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 400104412221 its reverse (122214401004), we get a palindrome (522318813225).

The spelling of 400104412221 in words is "four hundred billion, one hundred four million, four hundred twelve thousand, two hundred twenty-one".