201201101221 has 8 divisors (see below), whose sum is σ = 201937891680. Its totient is φ = 200465533488.

The previous prime is 201201101209. The next prime is 201201101279. The reversal of 201201101221 is 122101102102.

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 201201101221 - 2⁷ = 201201101093 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 (201201101291) 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, 24675 + ... + 634831.

It is an arithmetic number, because the mean of its divisors is an integer number (25242236460).

Almost surely, 2^201201101221 is an apocalyptic number.

It is an amenable number.

201201101221 is a deficient number, since it is larger than the sum of its proper divisors (736790459).

201201101221 is an equidigital number, since it uses as much as digits as its factorization.

201201101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611363.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201201101221 its reverse (122101102102), we get a palindrome (323302203323).

The spelling of 201201101221 in words is "two hundred one billion, two hundred one million, one hundred one thousand, two hundred twenty-one".