201202111011221 has 16 divisors (see below), whose sum is σ = 206319994982400. Its totient is φ = 196159619034288.

The previous prime is 201202111011203. The next prime is 201202111011227. The reversal of 201202111011221 is 122110111202102.

It is a cyclic number.

It is not a de Polignac number, because 201202111011221 - 2⁶ = 201202111011157 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 201202111011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202111011227) 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, 32805881 + ... + 38452958.

It is an arithmetic number, because the mean of its divisors is an integer number (12894999686400).

Almost surely, 2^{201202111011221} is an apocalyptic number.

It is an amenable number.

201202111011221 is a deficient number, since it is larger than the sum of its proper divisors (5117883971179).

201202111011221 is a wasteful number, since it uses less digits than its factorization.

201202111011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71259368.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201202111011221 its reverse (122110111202102), we get a palindrome (323312222213323).

The spelling of 201202111011221 in words is "two hundred one trillion, two hundred two billion, one hundred eleven million, eleven thousand, two hundred twenty-one".