201011022201221 has 4 divisors (see below), whose sum is σ = 201119853292512. Its totient is φ = 200902191109932.

The previous prime is 201011022201217. The next prime is 201011022201239. The reversal of 201011022201221 is 122102220110102.

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 201011022201221 - 2² = 201011022201217 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 201011022201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011022201281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54415542875 + ... + 54415546568.

It is an arithmetic number, because the mean of its divisors is an integer number (50279963323128).

Almost surely, 2^{201011022201221} is an apocalyptic number.

It is an amenable number.

201011022201221 is a deficient number, since it is larger than the sum of its proper divisors (108831091291).

201011022201221 is a wasteful number, since it uses less digits than its factorization.

201011022201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108831091290.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201011022201221 its reverse (122102220110102), we get a palindrome (323113242311323).

The spelling of 201011022201221 in words is "two hundred one trillion, eleven billion, twenty-two million, two hundred one thousand, two hundred twenty-one".