1111021112021 has 8 divisors (see below), whose sum is σ = 1120362854688. Its totient is φ = 1101692410000.

The previous prime is 1111021112017. The next prime is 1111021112093. The reversal of 1111021112021 is 1202111201111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1111021112021 - 2² = 1111021112017 is a prime.

It is a super-2 number, since 2×1111021112021² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111021111987 and 1111021112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111021112321) 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 7 ways as a sum of consecutive naturals, for example, 3089015 + ... + 3429876.

It is an arithmetic number, because the mean of its divisors is an integer number (140045356836).

Almost surely, 2^{1111021112021} is an apocalyptic number.

It is an amenable number.

1111021112021 is a deficient number, since it is larger than the sum of its proper divisors (9341742667).

1111021112021 is a wasteful number, since it uses less digits than its factorization.

1111021112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520323.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111021112021 its reverse (1202111201111), we get a palindrome (2313132313132).

The spelling of 1111021112021 in words is "one trillion, one hundred eleven billion, twenty-one million, one hundred twelve thousand, twenty-one".