400221243301 has 6 divisors (see below), whose sum is σ = 439912606406. Its totient is φ = 363837493800.

The previous prime is 400221243287. The next prime is 400221243307. The reversal of 400221243301 is 103342122004.

It can be written as a sum of positive squares in only one way, i.e., 353424305025 + 46796938276 = 594495^2 + 216326^2 .

It is not a de Polignac number, because 400221243301 - 2⁵ = 400221243269 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 (400221243307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1653806670 + ... + 1653806911.

Almost surely, 2^400221243301 is an apocalyptic number.

It is an amenable number.

400221243301 is a deficient number, since it is larger than the sum of its proper divisors (39691363105).

400221243301 is a wasteful number, since it uses less digits than its factorization.

400221243301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307613603 (or 3307613592 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 400221243301 its reverse (103342122004), we get a palindrome (503563365305).

The spelling of 400221243301 in words is "four hundred billion, two hundred twenty-one million, two hundred forty-three thousand, three hundred one".