212180401722 has 16 divisors (see below), whose sum is σ = 424470305952. Its totient is φ = 70708550160.

The previous prime is 212180401661. The next prime is 212180401777. The reversal of 212180401722 is 227104081212.

212180401722 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 212180401722.

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, 4537404 + ... + 4583927.

It is an arithmetic number, because the mean of its divisors is an integer number (26529394122).

Almost surely, 2^212180401722 is an apocalyptic number.

212180401722 is an abundant number, since it is smaller than the sum of its proper divisors (212289904230).

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

212180401722 is a wasteful number, since it uses less digits than its factorization.

212180401722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9125213.

The product of its (nonzero) digits is 3584, while the sum is 30.

Adding to 212180401722 its reverse (227104081212), we get a palindrome (439284482934).

The spelling of 212180401722 in words is "two hundred twelve billion, one hundred eighty million, four hundred one thousand, seven hundred twenty-two".