211200222121 has 8 divisors (see below), whose sum is σ = 249157865984. Its totient is φ = 175189124160.

The previous prime is 211200222047. The next prime is 211200222127. The reversal of 211200222121 is 121222002112.

It is a happy number.

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 211200222121 - 2²⁷ = 211066004393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211200222095 and 211200222104.

It is not an unprimeable number, because it can be changed into a prime (211200222127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 486636240 + ... + 486636673.

It is an arithmetic number, because the mean of its divisors is an integer number (31144733248).

Almost surely, 2^211200222121 is an apocalyptic number.

It is an amenable number.

211200222121 is a deficient number, since it is larger than the sum of its proper divisors (37957643863).

211200222121 is an equidigital number, since it uses as much as digits as its factorization.

211200222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973272951.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211200222121 its reverse (121222002112), we get a palindrome (332422224233).

The spelling of 211200222121 in words is "two hundred eleven billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-one".