2122122122021 has 8 divisors (see below), whose sum is σ = 2315075796000. Its totient is φ = 1929174028240.

The previous prime is 2122122122011. The next prime is 2122122122069. The reversal of 2122122122021 is 1202212212212.

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 2122122122021 - 2³⁰ = 2121048380197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122122121984 and 2122122122002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122122122011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579131 + ... + 2140008.

It is an arithmetic number, because the mean of its divisors is an integer number (289384474500).

Almost surely, 2^{2122122122021} is an apocalyptic number.

It is an amenable number.

2122122122021 is a deficient number, since it is larger than the sum of its proper divisors (192953673979).

2122122122021 is a wasteful number, since it uses less digits than its factorization.

2122122122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790099.

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

Adding to 2122122122021 its reverse (1202212212212), we get a palindrome (3324334334233).

The spelling of 2122122122021 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, twenty-one".