201202121112221 has 8 divisors (see below), whose sum is σ = 209972656259520. Its totient is φ = 192433470701472.

The previous prime is 201202121112217. The next prime is 201202121112233. The reversal of 201202121112221 is 122211121202102.

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

It is a cyclic number.

It is not a de Polignac number, because 201202121112221 - 2² = 201202121112217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201202121112193 and 201202121112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202121112721) 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, 470965976 + ... + 471392993.

It is an arithmetic number, because the mean of its divisors is an integer number (26246582032440).

Almost surely, 2^{201202121112221} is an apocalyptic number.

It is an amenable number.

201202121112221 is a deficient number, since it is larger than the sum of its proper divisors (8770535147299).

201202121112221 is an equidigital number, since it uses as much as digits as its factorization.

201202121112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942368275.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 201202121112221 its reverse (122211121202102), we get a palindrome (323413242314323).

The spelling of 201202121112221 in words is "two hundred one trillion, two hundred two billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-one".