211221211120201 has 8 divisors (see below), whose sum is σ = 211291872948000. Its totient is φ = 211150558308480.

The previous prime is 211221211120109. The next prime is 211221211120217. The reversal of 211221211120201 is 102021112122112.

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 a de Polignac number, because none of the positive numbers 2^k-211221211120201 is a prime.

It is a super-2 number, since 2×211221211120201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221211120261) 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, 44772121 + ... + 49264441.

It is an arithmetic number, because the mean of its divisors is an integer number (26411484118500).

Almost surely, 2^{211221211120201} is an apocalyptic number.

It is an amenable number.

211221211120201 is a deficient number, since it is larger than the sum of its proper divisors (70661827799).

211221211120201 is a wasteful number, since it uses less digits than its factorization.

211221211120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508039.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211221211120201 its reverse (102021112122112), we get a palindrome (313242323242313).

The spelling of 211221211120201 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred one".