211211133211121 has 8 divisors (see below), whose sum is σ = 214034411967264. Its totient is φ = 208403583028000.

The previous prime is 211211133211079. The next prime is 211211133211139. The reversal of 211211133211121 is 121112331112112.

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-211211133211121 is a prime.

It is a super-2 number, since 2×211211133211121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (211211133211621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3932116220 + ... + 3932169933.

It is an arithmetic number, because the mean of its divisors is an integer number (26754301495908).

Almost surely, 2^{211211133211121} is an apocalyptic number.

It is an amenable number.

211211133211121 is a deficient number, since it is larger than the sum of its proper divisors (2823278756143).

211211133211121 is a wasteful number, since it uses less digits than its factorization.

211211133211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7864286511.

The product of its digits is 144, while the sum is 23.

Adding to 211211133211121 its reverse (121112331112112), we get a palindrome (332323464323233).

The spelling of 211211133211121 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred thirty-three million, two hundred eleven thousand, one hundred twenty-one".