211302201221 has 8 divisors (see below), whose sum is σ = 220539504384. Its totient is φ = 202069085680.

The previous prime is 211302201203. The next prime is 211302201223. The reversal of 211302201221 is 122102203112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211302201221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211302201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211302201223) 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, 943565 + ... + 1145826.

It is an arithmetic number, because the mean of its divisors is an integer number (27567438048).

Almost surely, 2^211302201221 is an apocalyptic number.

It is an amenable number.

211302201221 is a deficient number, since it is larger than the sum of its proper divisors (9237303163).

211302201221 is a wasteful number, since it uses less digits than its factorization.

211302201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093811.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 211302201221 its reverse (122102203112), we get a palindrome (333404404333).

The spelling of 211302201221 in words is "two hundred eleven billion, three hundred two million, two hundred one thousand, two hundred twenty-one".