400412324212 has 6 divisors (see below), whose sum is σ = 700721567378. Its totient is φ = 200206162104.

The previous prime is 400412324183. The next prime is 400412324219. The reversal of 400412324212 is 212423214004.

It can be written as a sum of positive squares in only one way, i.e., 294451657956 + 105960666256 = 542634^2 + 325516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400412324219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50051540523 + ... + 50051540530.

Almost surely, 2^400412324212 is an apocalyptic number.

It is an amenable number.

400412324212 is a deficient number, since it is larger than the sum of its proper divisors (300309243166).

400412324212 is a wasteful number, since it uses less digits than its factorization.

400412324212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100103081057 (or 100103081055 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 400412324212 its reverse (212423214004), we get a palindrome (612835538216).

The spelling of 400412324212 in words is "four hundred billion, four hundred twelve million, three hundred twenty-four thousand, two hundred twelve".