400112212 has 6 divisors (see below), whose sum is σ = 700196378. Its totient is φ = 200056104.

The previous prime is 400112201. The next prime is 400112213. The reversal of 400112212 is 212211004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 373030596 + 27081616 = 19314^2 + 5204^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400112192 and 400112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400112213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50014023 + ... + 50014030.

Almost surely, 2^400112212 is an apocalyptic number.

It is an amenable number.

400112212 is a deficient number, since it is larger than the sum of its proper divisors (300084166).

400112212 is a wasteful number, since it uses less digits than its factorization.

400112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100028057 (or 100028055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 400112212 is about 20002.8051032849. The cubic root of 400112212 is about 736.8751920434.

Adding to 400112212 its reverse (212211004), we get a palindrome (612323216).

The spelling of 400112212 in words is "four hundred million, one hundred twelve thousand, two hundred twelve".