400222112240 has 40 divisors (see below), whose sum is σ = 930937300128. Its totient is φ = 160016433920.

The previous prime is 400222112237. The next prime is 400222112249. The reversal of 400222112240 is 42211222004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400222112249) 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, 953276 + ... + 1307355.

Almost surely, 2^400222112240 is an apocalyptic number.

400222112240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400222112240 is an abundant number, since it is smaller than the sum of its proper divisors (530715187888).

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

400222112240 is a wasteful number, since it uses less digits than its factorization.

400222112240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262857 (or 2262851 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 400222112240 its reverse (42211222004), we get a palindrome (442433334244).

The spelling of 400222112240 in words is "four hundred billion, two hundred twenty-two million, one hundred twelve thousand, two hundred forty".