400011222 has 16 divisors (see below), whose sum is σ = 861562800. Its totient is φ = 123080352.

The previous prime is 400011217. The next prime is 400011223. The reversal of 400011222 is 222110004.

It is a super-3 number, since 3×400011222³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400011198 and 400011207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400011223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564097 + ... + 2564252.

It is an arithmetic number, because the mean of its divisors is an integer number (53847675).

Almost surely, 2^400011222 is an apocalyptic number.

400011222 is an abundant number, since it is smaller than the sum of its proper divisors (461551578).

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

400011222 is a wasteful number, since it uses less digits than its factorization.

400011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128367.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400011222 is about 20000.2805480323. The cubic root of 400011222 is about 736.8131900306.

Adding to 400011222 its reverse (222110004), we get a palindrome (622121226).

The spelling of 400011222 in words is "four hundred million, eleven thousand, two hundred twenty-two".