111021212011 has 2 divisors, whose sum is σ = 111021212012. Its totient is φ = 111021212010.

The previous prime is 111021211981. The next prime is 111021212017. The reversal of 111021212011 is 110212120111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111021212011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111021211982 and 111021212000.

It is not a weakly prime, because it can be changed into another prime (111021212017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55510606005 + 55510606006.

It is an arithmetic number, because the mean of its divisors is an integer number (55510606006).

Almost surely, 2^111021212011 is an apocalyptic number.

111021212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111021212011 is an equidigital number, since it uses as much as digits as its factorization.

111021212011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111021212011 its reverse (110212120111), we get a palindrome (221233332122).

The spelling of 111021212011 in words is "one hundred eleven billion, twenty-one million, two hundred twelve thousand, eleven".