111010221202120 has 32 divisors (see below), whose sum is σ = 249863725521720. Its totient is φ = 44387959091200.

The previous prime is 111010221202117. The next prime is 111010221202121. The reversal of 111010221202120 is 21202122010111.

It can be written as a sum of positive squares in 4 ways, for example, as 109629234278404 + 1380986923716 = 10470398^2 + 1175154^2 .

It is a super-2 number, since 2×111010221202120² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111010221202094 and 111010221202103.

It is not an unprimeable number, because it can be changed into a prime (111010221202121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503931931 + ... + 504152170.

Almost surely, 2^{111010221202120} is an apocalyptic number.

111010221202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111010221202120 is an abundant number, since it is smaller than the sum of its proper divisors (138853504319600).

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

111010221202120 is a wasteful number, since it uses less digits than its factorization.

111010221202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008086865 (or 1008086861 counting only the distinct ones).

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

Adding to 111010221202120 its reverse (21202122010111), we get a palindrome (132212343212231).

The spelling of 111010221202120 in words is "one hundred eleven trillion, ten billion, two hundred twenty-one million, two hundred two thousand, one hundred twenty".