400213221324 has 48 divisors (see below), whose sum is σ = 1068679584000. Its totient is φ = 114191885376.

The previous prime is 400213221319. The next prime is 400213221337. The reversal of 400213221324 is 423122312004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 400213221294 and 400213221303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3161499 + ... + 3285650.

It is an arithmetic number, because the mean of its divisors is an integer number (22264158000).

Almost surely, 2^400213221324 is an apocalyptic number.

It is an amenable number.

400213221324 is an abundant number, since it is smaller than the sum of its proper divisors (668466362676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400213221324 is a wasteful number, since it uses less digits than its factorization.

400213221324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6447902 (or 6447900 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 400213221324 its reverse (423122312004), we get a palindrome (823335533328).

The spelling of 400213221324 in words is "four hundred billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred twenty-four".