212221202011 has 12 divisors (see below), whose sum is σ = 265859528592. Its totient is φ = 167911280208.

The previous prime is 212221201987. The next prime is 212221202033. The reversal of 212221202011 is 110202122212.

It is a happy number.

It is not a de Polignac number, because 212221202011 - 2¹⁵ = 212221169243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212221202051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166578015 + ... + 166579288.

It is an arithmetic number, because the mean of its divisors is an integer number (22154960716).

Almost surely, 2^212221202011 is an apocalyptic number.

212221202011 is a deficient number, since it is larger than the sum of its proper divisors (53638326581).

212221202011 is a wasteful number, since it uses less digits than its factorization.

212221202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333157330 (or 333157323 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212221202011 its reverse (110202122212), we get a palindrome (322423324223).

The spelling of 212221202011 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred two thousand, eleven".