222222101211111 has 16 divisors (see below), whose sum is σ = 297934195759200. Its totient is φ = 147329042924160.

The previous prime is 222222101211109. The next prime is 222222101211113. The reversal of 222222101211111 is 111112101222222.

It is an interprime number because it is at equal distance from previous prime (222222101211109) and next prime (222222101211113).

It is not a de Polignac number, because 222222101211111 - 2¹ = 222222101211109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222101211113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203826865 + ... + 204914213.

It is an arithmetic number, because the mean of its divisors is an integer number (18620887234950).

Almost surely, 2^{222222101211111} is an apocalyptic number.

222222101211111 is a deficient number, since it is larger than the sum of its proper divisors (75712094548089).

222222101211111 is a wasteful number, since it uses less digits than its factorization.

222222101211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463906.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222222101211111 its reverse (111112101222222), we get a palindrome (333334202433333).

The spelling of 222222101211111 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one hundred one million, two hundred eleven thousand, one hundred eleven".