212200202121 has 16 divisors (see below), whose sum is σ = 292999118400. Its totient is φ = 136444349888.

The previous prime is 212200202117. The next prime is 212200202191. The reversal of 212200202121 is 121202002212.

It is a cyclic number.

It is not a de Polignac number, because 212200202121 - 2² = 212200202117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212200202121.

It is not an unprimeable number, because it can be changed into a prime (212200202191) 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, 1205406 + ... + 1370183.

It is an arithmetic number, because the mean of its divisors is an integer number (18312444900).

Almost surely, 2^212200202121 is an apocalyptic number.

It is an amenable number.

212200202121 is a deficient number, since it is larger than the sum of its proper divisors (80798916279).

212200202121 is a wasteful number, since it uses less digits than its factorization.

212200202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576568.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 212200202121 its reverse (121202002212), we get a palindrome (333402204333).

The spelling of 212200202121 in words is "two hundred twelve billion, two hundred million, two hundred two thousand, one hundred twenty-one".