400213221303 has 32 divisors (see below), whose sum is σ = 651228917760. Its totient is φ = 213684468480.

The previous prime is 400213221271. The next prime is 400213221319. The reversal of 400213221303 is 303122312004.

It is not a de Polignac number, because 400213221303 - 2⁵ = 400213221271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 400213221303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400213225303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10580550 + ... + 10618307.

It is an arithmetic number, because the mean of its divisors is an integer number (20350903680).

Almost surely, 2^400213221303 is an apocalyptic number.

400213221303 is a deficient number, since it is larger than the sum of its proper divisors (251015696457).

400213221303 is a wasteful number, since it uses less digits than its factorization.

400213221303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21198927.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 400213221303 its reverse (303122312004), we get a palindrome (703335533307).

The spelling of 400213221303 in words is "four hundred billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred three".