211200022122121 has 8 divisors (see below), whose sum is σ = 211841367639264. Its totient is φ = 210558696358560.

The previous prime is 211200022122097. The next prime is 211200022122149. The reversal of 211200022122121 is 121221220002112.

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

It is a cyclic number.

It is not a de Polignac number, because 211200022122121 - 2⁹ = 211200022121609 is a prime.

It is a super-4 number, since 4×211200022122121⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211200022122191) 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, 16620210 + ... + 26431636.

It is an arithmetic number, because the mean of its divisors is an integer number (26480170954908).

Almost surely, 2^{211200022122121} is an apocalyptic number.

It is an amenable number.

211200022122121 is a deficient number, since it is larger than the sum of its proper divisors (641345517143).

211200022122121 is an equidigital number, since it uses as much as digits as its factorization.

211200022122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9876791.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211200022122121 its reverse (121221220002112), we get a palindrome (332421242124233).

The spelling of 211200022122121 in words is "two hundred eleven trillion, two hundred billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".