211211122212011 has 8 divisors (see below), whose sum is σ = 211355959067280. Its totient is φ = 211066289870112.

The previous prime is 211211122211977. The next prime is 211211122212091. The reversal of 211211122212011 is 110212221112112.

It is a happy number.

211211122212011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211211122212011 is a prime.

It is a super-2 number, since 2×211211122212011² (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 (211211122212091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95321141 + ... + 97511753.

It is an arithmetic number, because the mean of its divisors is an integer number (26419494883410).

Almost surely, 2^{211211122212011} is an apocalyptic number.

211211122212011 is a deficient number, since it is larger than the sum of its proper divisors (144836855269).

211211122212011 is a wasteful number, since it uses less digits than its factorization.

211211122212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256685.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211211122212011 its reverse (110212221112112), we get a palindrome (321423343324123).

The spelling of 211211122212011 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, eleven".