400322430212 has 6 divisors (see below), whose sum is σ = 700564252878. Its totient is φ = 200161215104.

The previous prime is 400322430197. The next prime is 400322430239. The reversal of 400322430212 is 212034223004.

It can be written as a sum of positive squares in only one way, i.e., 381669426436 + 18653003776 = 617794^2 + 136576^2 .

It is a super-2 number, since 2×400322430212² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50040303773 + ... + 50040303780.

It is an arithmetic number, because the mean of its divisors is an integer number (116760708813).

Almost surely, 2^400322430212 is an apocalyptic number.

It is an amenable number.

400322430212 is a deficient number, since it is larger than the sum of its proper divisors (300241822666).

400322430212 is a wasteful number, since it uses less digits than its factorization.

400322430212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100080607557 (or 100080607555 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 400322430212 its reverse (212034223004), we get a palindrome (612356653216).

The spelling of 400322430212 in words is "four hundred billion, three hundred twenty-two million, four hundred thirty thousand, two hundred twelve".