111002212021122 has 48 divisors (see below), whose sum is σ = 240760537949880. Its totient is φ = 36961406956800.

The previous prime is 111002212021121. The next prime is 111002212021159. The reversal of 111002212021122 is 221120212200111.

It can be written as a sum of positive squares in 4 ways, for example, as 108502243106481 + 2499968914641 = 10416441^2 + 1581129^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111002212021095 and 111002212021104.

It is not an unprimeable number, because it can be changed into a prime (111002212021121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88328622 + ... + 89576502.

Almost surely, 2^{111002212021122} is an apocalyptic number.

111002212021122 is an abundant number, since it is smaller than the sum of its proper divisors (129758325928758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111002212021122 is a wasteful number, since it uses less digits than its factorization.

111002212021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253139 (or 1253136 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111002212021122 its reverse (221120212200111), we get a palindrome (332122424221233).

The spelling of 111002212021122 in words is "one hundred eleven trillion, two billion, two hundred twelve million, twenty-one thousand, one hundred twenty-two".