2122102122221 has 8 divisors (see below), whose sum is σ = 2195349091200. Its totient is φ = 2048859888880.

The previous prime is 2122102122211. The next prime is 2122102122223. The reversal of 2122102122221 is 1222212012212.

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-2122102122221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122102122193 and 2122102122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122102122223) 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, 259985 + ... + 2076486.

It is an arithmetic number, because the mean of its divisors is an integer number (274418636400).

Almost surely, 2^{2122102122221} is an apocalyptic number.

It is an amenable number.

2122102122221 is a deficient number, since it is larger than the sum of its proper divisors (73246968979).

2122102122221 is a wasteful number, since it uses less digits than its factorization.

2122102122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367819.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2122102122221 its reverse (1222212012212), we get a palindrome (3344314134433).

The spelling of 2122102122221 in words is "two trillion, one hundred twenty-two billion, one hundred two million, one hundred twenty-two thousand, two hundred twenty-one".