211222221210011 has 4 divisors (see below), whose sum is σ = 230424241320024. Its totient is φ = 192020201100000.

The previous prime is 211222221210001. The next prime is 211222221210043. The reversal of 211222221210011 is 110012122222112.

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 211222221210011 - 2¹⁰ = 211222221208987 is a prime.

It is a super-2 number, since 2×211222221210011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211222221210001) 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, 9601010054990 + ... + 9601010055011.

It is an arithmetic number, because the mean of its divisors is an integer number (57606060330006).

Almost surely, 2^{211222221210011} is an apocalyptic number.

211222221210011 is a deficient number, since it is larger than the sum of its proper divisors (19202020110013).

211222221210011 is a wasteful number, since it uses less digits than its factorization.

211222221210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19202020110012.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211222221210011 its reverse (110012122222112), we get a palindrome (321234343432123).

The spelling of 211222221210011 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred ten thousand, eleven".