1111110212021 has 4 divisors (see below), whose sum is σ = 1117763566752. Its totient is φ = 1104456857292.

The previous prime is 1111110211997. The next prime is 1111110212057. The reversal of 1111110212021 is 1202120111111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111110212021 - 2⁶ = 1111110211957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111110211987 and 1111110212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111110212071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3326677115 + ... + 3326677448.

It is an arithmetic number, because the mean of its divisors is an integer number (279440891688).

Almost surely, 2^{1111110212021} is an apocalyptic number.

It is an amenable number.

1111110212021 is a deficient number, since it is larger than the sum of its proper divisors (6653354731).

1111110212021 is an equidigital number, since it uses as much as digits as its factorization.

1111110212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653354730.

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

Adding to 1111110212021 its reverse (1202120111111), we get a palindrome (2313230323132).

The spelling of 1111110212021 in words is "one trillion, one hundred eleven billion, one hundred ten million, two hundred twelve thousand, twenty-one".