201210202221221 has 8 divisors (see below), whose sum is σ = 201410776721184. Its totient is φ = 201009657859920.

The previous prime is 201210202221187. The next prime is 201210202221229. The reversal of 201210202221221 is 122122202012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201210202221221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201210202221193 and 201210202221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210202221229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5836106 + ... + 20892116.

It is an arithmetic number, because the mean of its divisors is an integer number (25176347090148).

Almost surely, 2^{201210202221221} is an apocalyptic number.

It is an amenable number.

201210202221221 is a deficient number, since it is larger than the sum of its proper divisors (200574499963).

201210202221221 is a wasteful number, since it uses less digits than its factorization.

201210202221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15069331.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201210202221221 its reverse (122122202012102), we get a palindrome (323332404233323).

The spelling of 201210202221221 in words is "two hundred one trillion, two hundred ten billion, two hundred two million, two hundred twenty-one thousand, two hundred twenty-one".