212201368722 has 54 divisors (see below), whose sum is σ = 534868545159. Its totient is φ = 60625053720.

The previous prime is 212201368697. The next prime is 212201368727. The reversal of 212201368722 is 227863102212.

212201368722 is a `hidden beast` number, since 2 + 1 + 220 + 1 + 368 + 72 + 2 = 666.

212201368722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 106100684361 + 106100684361 = 325731^2 + 325731^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325731.

It is not an unprimeable number, because it can be changed into a prime (212201368727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 13672947 + ... + 13688457.

Almost surely, 2^212201368722 is an apocalyptic number.

212201368722 is an abundant number, since it is smaller than the sum of its proper divisors (322667176437).

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

212201368722 is an frugal number, since it uses more digits than its factorization.

212201368722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31044 (or 15523 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 212201368722 in words is "two hundred twelve billion, two hundred one million, three hundred sixty-eight thousand, seven hundred twenty-two".