2122122022221 has 16 divisors (see below), whose sum is σ = 2836141862400. Its totient is φ = 1411425555888.

The previous prime is 2122122022201. The next prime is 2122122022289. The reversal of 2122122022221 is 1222202212212.

It is not a de Polignac number, because 2122122022221 - 2¹⁴ = 2122122005837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122122022201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21743710 + ... + 21841088.

It is an arithmetic number, because the mean of its divisors is an integer number (177258866400).

Almost surely, 2^{2122122022221} is an apocalyptic number.

It is an amenable number.

2122122022221 is a deficient number, since it is larger than the sum of its proper divisors (714019840179).

2122122022221 is a wasteful number, since it uses less digits than its factorization.

2122122022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114368.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2122122022221 its reverse (1222202212212), we get a palindrome (3344324234433).

The spelling of 2122122022221 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-two million, twenty-two thousand, two hundred twenty-one".