201221211022 has 8 divisors (see below), whose sum is σ = 325049648616. Its totient is φ = 92871328152.

The previous prime is 201221211013. The next prime is 201221211041. The reversal of 201221211022 is 220112122102.

It is a happy number.

201221211022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 201221210987 and 201221211005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3869638648 + ... + 3869638699.

It is an arithmetic number, because the mean of its divisors is an integer number (40631206077).

Almost surely, 2^201221211022 is an apocalyptic number.

201221211022 is a deficient number, since it is larger than the sum of its proper divisors (123828437594).

201221211022 is a wasteful number, since it uses less digits than its factorization.

201221211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7739277362.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201221211022 its reverse (220112122102), we get a palindrome (421333333124).

The spelling of 201221211022 in words is "two hundred one billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".