111021102011 has 2 divisors, whose sum is σ = 111021102012. Its totient is φ = 111021102010.

The previous prime is 111021101981. The next prime is 111021102013. The reversal of 111021102011 is 110201120111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111021102011 - 2²² = 111016907707 is a prime.

Together with 111021102013, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111021101983 and 111021102001.

It is not a weakly prime, because it can be changed into another prime (111021102013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510551005 + 55510551006.

It is an arithmetic number, because the mean of its divisors is an integer number (55510551006).

Almost surely, 2^111021102011 is an apocalyptic number.

111021102011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021102011 is an equidigital number, since it uses as much as digits as its factorization.

111021102011 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 11.

Adding to 111021102011 its reverse (110201120111), we get a palindrome (221222222122).

The spelling of 111021102011 in words is "one hundred eleven billion, twenty-one million, one hundred two thousand, eleven".