201221211010211 has 24 divisors (see below), whose sum is σ = 254341491240960. Its totient is φ = 158126782338000.

The previous prime is 201221211010189. The next prime is 201221211010219. The reversal of 201221211010211 is 112010112122102.

It is not a de Polignac number, because 201221211010211 - 2⁴⁶ = 130852466832547 is a prime.

It is a super-2 number, since 2×201221211010211² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201221211010211.

It is not an unprimeable number, because it can be changed into a prime (201221211010219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3486011315 + ... + 3486069036.

It is an arithmetic number, because the mean of its divisors is an integer number (10597562135040).

Almost surely, 2^{201221211010211} is an apocalyptic number.

201221211010211 is a deficient number, since it is larger than the sum of its proper divisors (53120280230749).

201221211010211 is a wasteful number, since it uses less digits than its factorization.

201221211010211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6972080415 (or 6972080408 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201221211010211 its reverse (112010112122102), we get a palindrome (313231323132313).

The spelling of 201221211010211 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred eleven million, ten thousand, two hundred eleven".