111212100011 has 2 divisors, whose sum is σ = 111212100012. Its totient is φ = 111212100010.

The previous prime is 111212099983. The next prime is 111212100049. The reversal of 111212100011 is 110001212111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111212100011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111212099965 and 111212100001.

It is not a weakly prime, because it can be changed into another prime (111212100511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606050005 + 55606050006.

It is an arithmetic number, because the mean of its divisors is an integer number (55606050006).

Almost surely, 2^111212100011 is an apocalyptic number.

111212100011 is a deficient number, since it is larger than the sum of its proper divisors (1).

111212100011 is an equidigital number, since it uses as much as digits as its factorization.

111212100011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111212100011 its reverse (110001212111), we get a palindrome (221213312122).

The spelling of 111212100011 in words is "one hundred eleven billion, two hundred twelve million, one hundred thousand, eleven".