211120122222221 has 8 divisors (see below), whose sum is σ = 211742590140000. Its totient is φ = 210498451831440.

The previous prime is 211120122222137. The next prime is 211120122222257. The reversal of 211120122222221 is 122222221021112.

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-211120122222221 is a prime.

It is a super-2 number, since 2×211120122222221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120122227221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198851531 + ... + 199910408.

It is an arithmetic number, because the mean of its divisors is an integer number (26467823767500).

Almost surely, 2^{211120122222221} is an apocalyptic number.

It is an amenable number.

211120122222221 is a deficient number, since it is larger than the sum of its proper divisors (622467917779).

211120122222221 is a wasteful number, since it uses less digits than its factorization.

211120122222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398763499.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211120122222221 its reverse (122222221021112), we get a palindrome (333342343243333).

The spelling of 211120122222221 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".