111222021122 has 32 divisors (see below), whose sum is σ = 171302148864. Its totient is φ = 54144090000.

The previous prime is 111222021121. The next prime is 111222021137. The reversal of 111222021122 is 221120222111.

It is a super-2 number, since 2×111222021122² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 111222021122.

It is not an unprimeable number, because it can be changed into a prime (111222021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4393433 + ... + 4418675.

It is an arithmetic number, because the mean of its divisors is an integer number (5353192152).

Almost surely, 2^111222021122 is an apocalyptic number.

111222021122 is a deficient number, since it is larger than the sum of its proper divisors (60080127742).

111222021122 is a wasteful number, since it uses less digits than its factorization.

111222021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25694.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111222021122 its reverse (221120222111), we get a palindrome (332342243233).

The spelling of 111222021122 in words is "one hundred eleven billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-two".