100212111211 has 2 divisors, whose sum is σ = 100212111212. Its totient is φ = 100212111210.

The previous prime is 100212111187. The next prime is 100212111239. The reversal of 100212111211 is 112111212001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100212111211 - 2⁹ = 100212110699 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212111191 and 100212111200.

It is not a weakly prime, because it can be changed into another prime (100212111271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106055605 + 50106055606.

It is an arithmetic number, because the mean of its divisors is an integer number (50106055606).

Almost surely, 2^100212111211 is an apocalyptic number.

100212111211 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212111211 is an equidigital number, since it uses as much as digits as its factorization.

100212111211 is an odious number, because the sum of its binary digits is odd.

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

Adding to 100212111211 its reverse (112111212001), we get a palindrome (212323323212).

The spelling of 100212111211 in words is "one hundred billion, two hundred twelve million, one hundred eleven thousand, two hundred eleven".