222131122111 has 4 divisors (see below), whose sum is σ = 222134083312. Its totient is φ = 222128160912.

The previous prime is 222131122099. The next prime is 222131122121. The reversal of 222131122111 is 111221131222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111221131222 = 2 ⋅55610565611.

It is a cyclic number.

It is not a de Polignac number, because 222131122111 - 2¹¹ = 222131120063 is a prime.

It is a super-3 number, since 3×222131122111³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222131122121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365075 + ... + 1519108.

It is an arithmetic number, because the mean of its divisors is an integer number (55533520828).

Almost surely, 2^222131122111 is an apocalyptic number.

222131122111 is a deficient number, since it is larger than the sum of its proper divisors (2961201).

222131122111 is an equidigital number, since it uses as much as digits as its factorization.

222131122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961200.

The product of its digits is 96, while the sum is 19.

Adding to 222131122111 its reverse (111221131222), we get a palindrome (333352253333).

It can be divided in two parts, 2221311 and 22111, that added together give a palindrome (2243422).

The spelling of 222131122111 in words is "two hundred twenty-two billion, one hundred thirty-one million, one hundred twenty-two thousand, one hundred eleven".