2122210122121 has 16 divisors (see below), whose sum is σ = 2140512480000. Its totient is φ = 2103950775168.

The previous prime is 2122210122013. The next prime is 2122210122139. The reversal of 2122210122121 is 1212210122212.

It is a cyclic number.

It is not a de Polignac number, because 2122210122121 - 2²⁵ = 2122176567689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122210122161) 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, 457075026 + ... + 457079668.

It is an arithmetic number, because the mean of its divisors is an integer number (133782030000).

Almost surely, 2^{2122210122121} is an apocalyptic number.

It is an amenable number.

2122210122121 is a deficient number, since it is larger than the sum of its proper divisors (18302357879).

2122210122121 is a wasteful number, since it uses less digits than its factorization.

2122210122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8448.

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

Adding to 2122210122121 its reverse (1212210122212), we get a palindrome (3334420244333).

Subtracting from 2122210122121 its reverse (1212210122212), we obtain a palindrome (909999999909).

The spelling of 2122210122121 in words is "two trillion, one hundred twenty-two billion, two hundred ten million, one hundred twenty-two thousand, one hundred twenty-one".