201200012102221 has 4 divisors (see below), whose sum is σ = 219490922293344. Its totient is φ = 182909101911100.

The previous prime is 201200012102213. The next prime is 201200012102261. The reversal of 201200012102221 is 122201210002102.

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 cyclic number.

It is not a de Polignac number, because 201200012102221 - 2³ = 201200012102213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201200012102195 and 201200012102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201200012102261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9145455095545 + ... + 9145455095566.

It is an arithmetic number, because the mean of its divisors is an integer number (54872730573336).

Almost surely, 2^{201200012102221} is an apocalyptic number.

It is an amenable number.

201200012102221 is a deficient number, since it is larger than the sum of its proper divisors (18290910191123).

201200012102221 is a wasteful number, since it uses less digits than its factorization.

201200012102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18290910191122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201200012102221 its reverse (122201210002102), we get a palindrome (323401222104323).

It can be divided in two parts, 20120001 and 2102221, that added together give a palindrome (22222222).

The spelling of 201200012102221 in words is "two hundred one trillion, two hundred billion, twelve million, one hundred two thousand, two hundred twenty-one".