211210212120011 has 32 divisors (see below), whose sum is σ = 243803527128000. Its totient is φ = 181558377681408.

The previous prime is 211210212119981. The next prime is 211210212120029. The reversal of 211210212120011 is 110021212012112.

It is a de Polignac number, because none of the positive numbers 2^k-211210212120011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211210212120311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88402076 + ... + 90759833.

It is an arithmetic number, because the mean of its divisors is an integer number (7618860222750).

Almost surely, 2^{211210212120011} is an apocalyptic number.

211210212120011 is a deficient number, since it is larger than the sum of its proper divisors (32593315007989).

211210212120011 is a wasteful number, since it uses less digits than its factorization.

211210212120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179162063.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211210212120011 its reverse (110021212012112), we get a palindrome (321231424132123).

The spelling of 211210212120011 in words is "two hundred eleven trillion, two hundred ten billion, two hundred twelve million, one hundred twenty thousand, eleven".