1111220110021 has 12 divisors (see below), whose sum is σ = 1348845707232. Its totient is φ = 911062449528.

The previous prime is 1111220109997. The next prime is 1111220110057. The reversal of 1111220110021 is 1200110221111.

It is a happy number.

It is not a de Polignac number, because 1111220110021 - 2¹¹ = 1111220107973 is a prime.

It is a super-3 number, since 3×1111220110021³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111220109983 and 1111220110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220510021) 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 11 ways as a sum of consecutive naturals, for example, 492998035 + ... + 493000288.

It is an arithmetic number, because the mean of its divisors is an integer number (112403808936).

Almost surely, 2^{1111220110021} is an apocalyptic number.

It is an amenable number.

1111220110021 is a deficient number, since it is larger than the sum of its proper divisors (237625597211).

1111220110021 is an equidigital number, since it uses as much as digits as its factorization.

1111220110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985998360 (or 985998353 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1111220110021 its reverse (1200110221111), we get a palindrome (2311330331132).

The spelling of 1111220110021 in words is "one trillion, one hundred eleven billion, two hundred twenty million, one hundred ten thousand, twenty-one".