201221112220201 has 8 divisors (see below), whose sum is σ = 218012477262624. Its totient is φ = 184980283736640.

The previous prime is 201221112220189. The next prime is 201221112220231. The reversal of 201221112220201 is 102022211122102.

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 201221112220201 - 2⁹ = 201221112219689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221112220231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137634138955 + ... + 137634140416.

It is an arithmetic number, because the mean of its divisors is an integer number (27251559657828).

Almost surely, 2^{201221112220201} is an apocalyptic number.

It is an amenable number.

201221112220201 is a deficient number, since it is larger than the sum of its proper divisors (16791365042423).

201221112220201 is a wasteful number, since it uses less digits than its factorization.

201221112220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275268279431.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201221112220201 its reverse (102022211122102), we get a palindrome (303243323342303).

The spelling of 201221112220201 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twelve million, two hundred twenty thousand, two hundred one".