400421244224033 has 4 divisors (see below), whose sum is σ = 403964795057988. Its totient is φ = 396877693390080.

The previous prime is 400421244223961. The next prime is 400421244224051. The reversal of 400421244224033 is 330422442124004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62242127439424 + 338179116784609 = 7889368^2 + 18389647^2 .

It is a cyclic number.

It is not a de Polignac number, because 400421244224033 - 2²⁸ = 400420975788577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400421244223984 and 400421244224002.

It is not an unprimeable number, because it can be changed into a prime (400421244224633) 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, 1771775416808 + ... + 1771775417033.

It is an arithmetic number, because the mean of its divisors is an integer number (100991198764497).

Almost surely, 2^{400421244224033} is an apocalyptic number.

It is an amenable number.

400421244224033 is a deficient number, since it is larger than the sum of its proper divisors (3543550833955).

400421244224033 is a wasteful number, since it uses less digits than its factorization.

400421244224033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543550833954.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 400421244224033 its reverse (330422442124004), we get a palindrome (730843686348037).

The spelling of 400421244224033 in words is "four hundred trillion, four hundred twenty-one billion, two hundred forty-four million, two hundred twenty-four thousand, thirty-three".