212212202201 has 4 divisors (see below), whose sum is σ = 221438819712. Its totient is φ = 202985584692.

The previous prime is 212212202161. The next prime is 212212202281. The reversal of 212212202201 is 102202212212.

It is a happy number.

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 de Polignac number, because none of the positive numbers 2^k-212212202201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212212202201.

It is not an unprimeable number, because it can be changed into a prime (212212202281) 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, 4613308721 + ... + 4613308766.

It is an arithmetic number, because the mean of its divisors is an integer number (55359704928).

Almost surely, 2^212212202201 is an apocalyptic number.

It is an amenable number.

212212202201 is a deficient number, since it is larger than the sum of its proper divisors (9226617511).

212212202201 is an equidigital number, since it uses as much as digits as its factorization.

212212202201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9226617510.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212212202201 its reverse (102202212212), we get a palindrome (314414414413).

The spelling of 212212202201 in words is "two hundred twelve billion, two hundred twelve million, two hundred two thousand, two hundred one".