400221232453 has 16 divisors (see below), whose sum is σ = 460106801280. Its totient is φ = 341014741056.

The previous prime is 400221232423. The next prime is 400221232459. The reversal of 400221232453 is 354232122004.

It is a cyclic number.

It is not a de Polignac number, because 400221232453 - 2¹³ = 400221224261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400221232459) 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, 3752775 + ... + 3857947.

It is an arithmetic number, because the mean of its divisors is an integer number (28756675080).

Almost surely, 2^400221232453 is an apocalyptic number.

It is an amenable number.

400221232453 is a deficient number, since it is larger than the sum of its proper divisors (59885568827).

400221232453 is a wasteful number, since it uses less digits than its factorization.

400221232453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108396.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 400221232453 its reverse (354232122004), we get a palindrome (754453354457).

The spelling of 400221232453 in words is "four hundred billion, two hundred twenty-one million, two hundred thirty-two thousand, four hundred fifty-three".