212201022009 has 16 divisors (see below), whose sum is σ = 300601638720. Its totient is φ = 132897562560.

The previous prime is 212201022001. The next prime is 212201022013. The reversal of 212201022009 is 900220102212.

It is a happy number.

It is not a de Polignac number, because 212201022009 - 2³ = 212201022001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212201022001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32957487 + ... + 32963924.

It is an arithmetic number, because the mean of its divisors is an integer number (18787602420).

Almost surely, 2^212201022009 is an apocalyptic number.

212201022009 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

212201022009 is a deficient number, since it is larger than the sum of its proper divisors (88400616711).

212201022009 is a wasteful number, since it uses less digits than its factorization.

212201022009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65921480.

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 212201022009 in words is "two hundred twelve billion, two hundred one million, twenty-two thousand, nine".