221112021112011 has 96 divisors (see below), whose sum is σ = 338143177082880. Its totient is φ = 138842778585600.

The previous prime is 221112021112007. The next prime is 221112021112093. The reversal of 221112021112011 is 110211120211122.

It is a happy number.

221112021112011 is a `hidden beast` number, since 2 + 211 + 120 + 211 + 120 + 1 + 1 = 666.

It is not a de Polignac number, because 221112021112011 - 2² = 221112021112007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221112021312011) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35600064696 + ... + 35600070906.

It is an arithmetic number, because the mean of its divisors is an integer number (3522324761280).

Almost surely, 2^{221112021112011} is an apocalyptic number.

221112021112011 is a deficient number, since it is larger than the sum of its proper divisors (117031155970869).

221112021112011 is a wasteful number, since it uses less digits than its factorization.

221112021112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8177 (or 8174 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 221112021112011 its reverse (110211120211122), we get a palindrome (331323141323133).

The spelling of 221112021112011 in words is "two hundred twenty-one trillion, one hundred twelve billion, twenty-one million, one hundred twelve thousand, eleven".