201201000000221 has 16 divisors (see below), whose sum is σ = 233895292364160. Its totient is φ = 171523214385600.

The previous prime is 201201000000199. The next prime is 201201000000277. The reversal of 201201000000221 is 122000000102102.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201201000000221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201000000521) 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, 11601940355 + ... + 11601957696.

It is an arithmetic number, because the mean of its divisors is an integer number (14618455772760).

Almost surely, 2^{201201000000221} is an apocalyptic number.

It is an amenable number.

201201000000221 is a deficient number, since it is larger than the sum of its proper divisors (32694292363939).

201201000000221 is a wasteful number, since it uses less digits than its factorization.

201201000000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23203898116.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201201000000221 its reverse (122000000102102), we get a palindrome (323201000102323).

The spelling of 201201000000221 in words is "two hundred one trillion, two hundred one billion, two hundred twenty-one", and thus it is an aban number.