1112111021021 has 32 divisors (see below), whose sum is σ = 1494273408768. Its totient is φ = 799336419840.

The previous prime is 1112111020913. The next prime is 1112111021023. The reversal of 1112111021021 is 1201201112111.

It is not a de Polignac number, because 1112111021021 - 2¹⁰ = 1112111019997 is a prime.

It is a super-2 number, since 2×1112111021021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1112111020987 and 1112111021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112111021023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 969785 + ... + 1778961.

It is an arithmetic number, because the mean of its divisors is an integer number (46696044024).

Almost surely, 2^{1112111021021} is an apocalyptic number.

1112111021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112111021021 is a deficient number, since it is larger than the sum of its proper divisors (382162387747).

1112111021021 is a wasteful number, since it uses less digits than its factorization.

1112111021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810581.

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

Adding to 1112111021021 its reverse (1201201112111), we get a palindrome (2313312133132).

The spelling of 1112111021021 in words is "one trillion, one hundred twelve billion, one hundred eleven million, twenty-one thousand, twenty-one".