201222221213 has 16 divisors (see below), whose sum is σ = 219933403200. Its totient is φ = 182985521664.

The previous prime is 201222221209. The next prime is 201222221227. The reversal of 201222221213 is 312122222102.

It is a cyclic number.

It is not a de Polignac number, because 201222221213 - 2² = 201222221209 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 (201222221203) 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, 116738 + ... + 645036.

It is an arithmetic number, because the mean of its divisors is an integer number (13745837700).

Almost surely, 2^201222221213 is an apocalyptic number.

It is an amenable number.

201222221213 is a deficient number, since it is larger than the sum of its proper divisors (18711181987).

201222221213 is a wasteful number, since it uses less digits than its factorization.

201222221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528748.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 201222221213 its reverse (312122222102), we get a palindrome (513344443315).

The spelling of 201222221213 in words is "two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred thirteen".