111021111120011 has 2 divisors, whose sum is σ = 111021111120012. Its totient is φ = 111021111120010.

The previous prime is 111021111119987. The next prime is 111021111120013. The reversal of 111021111120011 is 110021111120111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111021111120011 - 2³⁴ = 111003931250827 is a prime.

It is a super-2 number, since 2×111021111120011² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 111021111120013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111021111120013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510555560005 + 55510555560006.

It is an arithmetic number, because the mean of its divisors is an integer number (55510555560006).

Almost surely, 2^{111021111120011} is an apocalyptic number.

111021111120011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021111120011 is an equidigital number, since it uses as much as digits as its factorization.

111021111120011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 111021111120011 its reverse (110021111120111), we get a palindrome (221042222240122).

The spelling of 111021111120011 in words is "one hundred eleven trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand, eleven".