400204402022 has 32 divisors (see below), whose sum is σ = 626633776800. Its totient is φ = 191569824000.

The previous prime is 400204401979. The next prime is 400204402033. The reversal of 400204402022 is 220204402004.

It is a junction number, because it is equal to n+sod(n) for n = 400204401985 and 400204402003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 451754 + ... + 1002242.

It is an arithmetic number, because the mean of its divisors is an integer number (19582305525).

Almost surely, 2^400204402022 is an apocalyptic number.

400204402022 is a deficient number, since it is larger than the sum of its proper divisors (226429374778).

400204402022 is a wasteful number, since it uses less digits than its factorization.

400204402022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550712.

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 400204402022 its reverse (220204402004), we get a palindrome (620408804026).

The spelling of 400204402022 in words is "four hundred billion, two hundred four million, four hundred two thousand, twenty-two".