212011011011 has 4 divisors (see below), whose sum is σ = 212021304000. Its totient is φ = 212000718024.

The previous prime is 212011010977. The next prime is 212011011013. The reversal of 212011011011 is 110110110212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212011011011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212011010983 and 212011011001.

It is not an unprimeable number, because it can be changed into a prime (212011011013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115536 + ... + 5156813.

It is an arithmetic number, because the mean of its divisors is an integer number (53005326000).

Almost surely, 2^212011011011 is an apocalyptic number.

212011011011 is a deficient number, since it is larger than the sum of its proper divisors (10292989).

212011011011 is a wasteful number, since it uses less digits than its factorization.

212011011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292988.

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

Adding to 212011011011 its reverse (110110110212), we get a palindrome (322121121223).

The spelling of 212011011011 in words is "two hundred twelve billion, eleven million, eleven thousand, eleven".