212201209973 has 4 divisors (see below), whose sum is σ = 212210073120. Its totient is φ = 212192346828.

The previous prime is 212201209939. The next prime is 212201209991. The reversal of 212201209973 is 379902102212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212201209973 - 2²⁸ = 211932774517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201209993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4395563 + ... + 4443576.

It is an arithmetic number, because the mean of its divisors is an integer number (53052518280).

Almost surely, 2^212201209973 is an apocalyptic number.

It is an amenable number.

212201209973 is a deficient number, since it is larger than the sum of its proper divisors (8863147).

212201209973 is an equidigital number, since it uses as much as digits as its factorization.

212201209973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8863146.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 212201209973 in words is "two hundred twelve billion, two hundred one million, two hundred nine thousand, nine hundred seventy-three".