111210001210221 has 16 divisors (see below), whose sum is σ = 150619081414464. Its totient is φ = 72979287623424.

The previous prime is 111210001210201. The next prime is 111210001210237. The reversal of 111210001210221 is 122012100012111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-111210001210221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111210001210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111210001210201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1103289100 + ... + 1103389893.

It is an arithmetic number, because the mean of its divisors is an integer number (9413692588404).

Almost surely, 2^{111210001210221} is an apocalyptic number.

It is an amenable number.

111210001210221 is a deficient number, since it is larger than the sum of its proper divisors (39409080204243).

111210001210221 is a wasteful number, since it uses less digits than its factorization.

111210001210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2206679260.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 111210001210221 its reverse (122012100012111), we get a palindrome (233222101222332).

The spelling of 111210001210221 in words is "one hundred eleven trillion, two hundred ten billion, one million, two hundred ten thousand, two hundred twenty-one".