212211012210011 has 4 divisors (see below), whose sum is σ = 212211431100312. Its totient is φ = 212210593319712.

The previous prime is 212211012209971. The next prime is 212211012210013. The reversal of 212211012210011 is 110012210112212.

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 212211012210011 - 2¹⁸ = 212211011947867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212211012210013) 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, 208684325 + ... + 209698758.

It is an arithmetic number, because the mean of its divisors is an integer number (53052857775078).

Almost surely, 2^{212211012210011} is an apocalyptic number.

212211012210011 is a deficient number, since it is larger than the sum of its proper divisors (418890301).

212211012210011 is an equidigital number, since it uses as much as digits as its factorization.

212211012210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418890300.

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

Adding to 212211012210011 its reverse (110012210112212), we get a palindrome (322223222322223).

The spelling of 212211012210011 in words is "two hundred twelve trillion, two hundred eleven billion, twelve million, two hundred ten thousand, eleven".