2121022122211 has 8 divisors (see below), whose sum is σ = 2137422896640. Its totient is φ = 2104684066632.

The previous prime is 2121022122209. The next prime is 2121022122217. The reversal of 2121022122211 is 1122212201212.

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 2121022122211 - 2¹ = 2121022122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121022122217) 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, 15611815 + ... + 15747088.

It is an arithmetic number, because the mean of its divisors is an integer number (267177862080).

Almost surely, 2^{2121022122211} is an apocalyptic number.

2121022122211 is a deficient number, since it is larger than the sum of its proper divisors (16400774429).

2121022122211 is a wasteful number, since it uses less digits than its factorization.

2121022122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31359425.

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

Adding to 2121022122211 its reverse (1122212201212), we get a palindrome (3243234323423).

The spelling of 2121022122211 in words is "two trillion, one hundred twenty-one billion, twenty-two million, one hundred twenty-two thousand, two hundred eleven".