212221210011 has 64 divisors (see below), whose sum is σ = 315741888000. Its totient is φ = 126222243840.

The previous prime is 212221210007. The next prime is 212221210031. The reversal of 212221210011 is 110012122212.

It is not a de Polignac number, because 212221210011 - 2² = 212221210007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212221210001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62618905 + ... + 62622293.

It is an arithmetic number, because the mean of its divisors is an integer number (4933467000).

Almost surely, 2^212221210011 is an apocalyptic number.

212221210011 is a deficient number, since it is larger than the sum of its proper divisors (103520677989).

212221210011 is a wasteful number, since it uses less digits than its factorization.

212221210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212221210011 its reverse (110012122212), we get a palindrome (322233332223).

The spelling of 212221210011 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred ten thousand, eleven".