212210111011 has 4 divisors (see below), whose sum is σ = 212324143024. Its totient is φ = 212096079000.

The previous prime is 212210110997. The next prime is 212210111021. The reversal of 212210111011 is 110111012212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212210111011 - 2⁹ = 212210110499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212210110982 and 212210111000.

It is not an unprimeable number, because it can be changed into a prime (212210111021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57013215 + ... + 57016936.

It is an arithmetic number, because the mean of its divisors is an integer number (53081035756).

Almost surely, 2^212210111011 is an apocalyptic number.

212210111011 is a deficient number, since it is larger than the sum of its proper divisors (114032013).

212210111011 is a wasteful number, since it uses less digits than its factorization.

212210111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114032012.

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

Adding to 212210111011 its reverse (110111012212), we get a palindrome (322321123223).

The spelling of 212210111011 in words is "two hundred twelve billion, two hundred ten million, one hundred eleven thousand, eleven".