22212022123021 has 2 divisors, whose sum is σ = 22212022123022. Its totient is φ = 22212022123020.

The previous prime is 22212022123013. The next prime is 22212022123073. The reversal of 22212022123021 is 12032122021222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22209908882121 + 2113240900 = 4712739^2 + 45970^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212022123021 - 2³ = 22212022123013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22212022122983 and 22212022123001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22212022123321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106011061510 + 11106011061511.

It is an arithmetic number, because the mean of its divisors is an integer number (11106011061511).

Almost surely, 2^{22212022123021} is an apocalyptic number.

It is an amenable number.

22212022123021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212022123021 is an equidigital number, since it uses as much as digits as its factorization.

22212022123021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22212022123021 its reverse (12032122021222), we get a palindrome (34244144144243).

The spelling of 22212022123021 in words is "twenty-two trillion, two hundred twelve billion, twenty-two million, one hundred twenty-three thousand, twenty-one".