111021020021122 has 16 divisors (see below), whose sum is σ = 166582210665240. Its totient is φ = 55493617328128.

The previous prime is 111021020021071. The next prime is 111021020021137. The reversal of 111021020021122 is 221120020120111.

It can be written as a sum of positive squares in 4 ways, for example, as 42241017477481 + 68780002543641 = 6499309^2 + 8293371^2 .

It is a super-2 number, since 2×111021020021122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111021020021096 and 111021020021105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286048218 + ... + 286436074.

Almost surely, 2^{111021020021122} is an apocalyptic number.

111021020021122 is a deficient number, since it is larger than the sum of its proper divisors (55561190644118).

111021020021122 is a wasteful number, since it uses less digits than its factorization.

111021020021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431045.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111021020021122 its reverse (221120020120111), we get a palindrome (332141040141233).

The spelling of 111021020021122 in words is "one hundred eleven trillion, twenty-one billion, twenty million, twenty-one thousand, one hundred twenty-two".