11212221021201 has 48 divisors (see below), whose sum is σ = 17916206730240. Its totient is φ = 6732177598080.

The previous prime is 11212221021181. The next prime is 11212221021203. The reversal of 11212221021201 is 10212012221211.

11212221021201 is a `hidden beast` number, since 11 + 212 + 221 + 0 + 21 + 201 = 666.

It is not a de Polignac number, because 11212221021201 - 2¹⁵ = 11212220988433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11212221021203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23374306 + ... + 23849163.

It is an arithmetic number, because the mean of its divisors is an integer number (373254306880).

Almost surely, 2^{11212221021201} is an apocalyptic number.

It is an amenable number.

11212221021201 is a deficient number, since it is larger than the sum of its proper divisors (6703985709039).

11212221021201 is a wasteful number, since it uses less digits than its factorization.

11212221021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47223566 (or 47223563 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212221021201 its reverse (10212012221211), we get a palindrome (21424233242412).

The spelling of 11212221021201 in words is "eleven trillion, two hundred twelve billion, two hundred twenty-one million, twenty-one thousand, two hundred one".