400202323212 has 24 divisors (see below), whose sum is σ = 937712563200. Its totient is φ = 132842611216.

The previous prime is 400202323189. The next prime is 400202323229. The reversal of 400202323212 is 212323202004.

It is a super-2 number, since 2×400202323212² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69767412 + ... + 69773147.

It is an arithmetic number, because the mean of its divisors is an integer number (39071356800).

Almost surely, 2^400202323212 is an apocalyptic number.

It is an amenable number.

400202323212 is an abundant number, since it is smaller than the sum of its proper divisors (537510239988).

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

400202323212 is a wasteful number, since it uses less digits than its factorization.

400202323212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139540805 (or 139540803 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 400202323212 its reverse (212323202004), we get a palindrome (612525525216).

The spelling of 400202323212 in words is "four hundred billion, two hundred two million, three hundred twenty-three thousand, two hundred twelve".