400430014221 has 4 divisors (see below), whose sum is σ = 533906685632. Its totient is φ = 266953342812.

The previous prime is 400430014217. The next prime is 400430014297. The reversal of 400430014221 is 122410034004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400430014221 - 2² = 400430014217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400430014321) 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, 66738335701 + ... + 66738335706.

It is an arithmetic number, because the mean of its divisors is an integer number (133476671408).

Almost surely, 2^400430014221 is an apocalyptic number.

It is an amenable number.

400430014221 is a deficient number, since it is larger than the sum of its proper divisors (133476671411).

400430014221 is a wasteful number, since it uses less digits than its factorization.

400430014221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133476671410.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 400430014221 its reverse (122410034004), we get a palindrome (522840048225).

The spelling of 400430014221 in words is "four hundred billion, four hundred thirty million, fourteen thousand, two hundred twenty-one".