2022222121121 has 2 divisors, whose sum is σ = 2022222121122. Its totient is φ = 2022222121120.

The previous prime is 2022222121111. The next prime is 2022222121141. The reversal of 2022222121121 is 1211212222202.

It is an a-pointer prime, because the next prime (2022222121141) can be obtained adding 2022222121121 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1230191539600 + 792030581521 = 1109140^2 + 889961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2022222121121 is a prime.

It is a super-2 number, since 2×2022222121121² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2022222121093 and 2022222121102.

It is not a weakly prime, because it can be changed into another prime (2022222121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011111060560 + 1011111060561.

It is an arithmetic number, because the mean of its divisors is an integer number (1011111060561).

Almost surely, 2^{2022222121121} is an apocalyptic number.

It is an amenable number.

2022222121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2022222121121 is an equidigital number, since it uses as much as digits as its factorization.

2022222121121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2022222121121 its reverse (1211212222202), we get a palindrome (3233434343323).

The spelling of 2022222121121 in words is "two trillion, twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-one".