111222221122 has 16 divisors (see below), whose sum is σ = 170133487992. Its totient is φ = 54512939520.

The previous prime is 111222221111. The next prime is 111222221137. The reversal of 111222221122 is 221122222111.

It can be written as a sum of positive squares in 4 ways, for example, as 107132490721 + 4089730401 = 327311^2 + 63951^2 .

It is a super-2 number, since 2×111222221122² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111222221122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351279 + ... + 588082.

Almost surely, 2^111222221122 is an apocalyptic number.

111222221122 is a deficient number, since it is larger than the sum of its proper divisors (58911266870).

111222221122 is a wasteful number, since it uses less digits than its factorization.

111222221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940533.

The product of its digits is 128, while the sum is 19.

Adding to 111222221122 its reverse (221122222111), we get a palindrome (332344443233).

The spelling of 111222221122 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twenty-one thousand, one hundred twenty-two".