112221111112221 has 64 divisors (see below), whose sum is σ = 154873104189696. Its totient is φ = 72225893376000.

The previous prime is 112221111112093. The next prime is 112221111112277. The reversal of 112221111112221 is 122211111122211.

It is not a de Polignac number, because 112221111112221 - 2⁷ = 112221111112093 is a prime.

It is a super-2 number, since 2×112221111112221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112221111112291) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10260679465 + ... + 10260690401.

It is an arithmetic number, because the mean of its divisors is an integer number (2419892252964).

Almost surely, 2^{112221111112221} is an apocalyptic number.

It is an amenable number.

112221111112221 is a deficient number, since it is larger than the sum of its proper divisors (42651993077475).

112221111112221 is a wasteful number, since it uses less digits than its factorization.

112221111112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622.

The product of its digits is 64, while the sum is 21.

Adding to 112221111112221 its reverse (122211111122211), we get a palindrome (234432222234432).

The spelling of 112221111112221 in words is "one hundred twelve trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".