211387822472 has 12 divisors (see below), whose sum is σ = 396354605445. Its totient is φ = 105693261024.

The previous prime is 211387822417. The next prime is 211387822483. The reversal of 211387822472 is 274228783112.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

211387822472 is digitally balanced in base 3, 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 2 ways, for example, as 118249327876 + 93138494596 = 343874^2 + 305186^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=325106.

It is a super-2 number, since 2×211387822472² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1219148 + ... + 1381700.

Almost surely, 2^211387822472 is an apocalyptic number.

It is an amenable number.

211387822472 is a deficient number, since it is larger than the sum of its proper divisors (184966782973).

211387822472 is an frugal number, since it uses more digits than its factorization.

211387822472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325112 (or 162555 counting only the distinct ones).

The product of its digits is 602112, while the sum is 47.

The spelling of 211387822472 in words is "two hundred eleven billion, three hundred eighty-seven million, eight hundred twenty-two thousand, four hundred seventy-two".