400222022 has 4 divisors (see below), whose sum is σ = 600333036. Its totient is φ = 200111010.

The previous prime is 400222019. The next prime is 400222063. The reversal of 400222022 is 220222004.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 400221988 and 400222006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100055504 + ... + 100055507.

It is an arithmetic number, because the mean of its divisors is an integer number (150083259).

Almost surely, 2^400222022 is an apocalyptic number.

400222022 is a deficient number, since it is larger than the sum of its proper divisors (200111014).

400222022 is a wasteful number, since it uses less digits than its factorization.

400222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200111013.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 400222022 is about 20005.5497799985. The cubic root of 400222022 is about 736.9425971872.

Adding to 400222022 its reverse (220222004), we get a palindrome (620444026).

The spelling of 400222022 in words is "four hundred million, two hundred twenty-two thousand, twenty-two".