2012201221 has 8 divisors (see below), whose sum is σ = 2082769920. Its totient is φ = 1941711408.

The previous prime is 2012201197. The next prime is 2012201237. The reversal of 2012201221 is 1221022102.

It is a happy number.

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 2012201221 - 2¹⁵ = 2012168453 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 (2012201291) 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, 34780 + ... + 72346.

It is an arithmetic number, because the mean of its divisors is an integer number (260346240).

Almost surely, 2^2012201221 is an apocalyptic number.

It is an amenable number.

2012201221 is a deficient number, since it is larger than the sum of its proper divisors (70568699).

2012201221 is a wasteful number, since it uses less digits than its factorization.

2012201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39443.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2012201221 is about 44857.5659281687. The cubic root of 2012201221 is about 1262.4779532274.

Adding to 2012201221 its reverse (1221022102), we get a palindrome (3233223323).

The spelling of 2012201221 in words is "two billion, twelve million, two hundred one thousand, two hundred twenty-one".