22122201212021 has 2 divisors, whose sum is σ = 22122201212022. Its totient is φ = 22122201212020.

The previous prime is 22122201211991. The next prime is 22122201212071. The reversal of 22122201212021 is 12021210222122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21596597961796 + 525603250225 = 4647214^2 + 724985^2 .

It is a cyclic number.

It is not a de Polignac number, because 22122201212021 - 2³⁴ = 22105021342837 is a prime.

It is a super-3 number, since 3×22122201212021³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22122201211984 and 22122201212002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122201212071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061100606010 + 11061100606011.

It is an arithmetic number, because the mean of its divisors is an integer number (11061100606011).

Almost surely, 2^{22122201212021} is an apocalyptic number.

It is an amenable number.

22122201212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122201212021 is an equidigital number, since it uses as much as digits as its factorization.

22122201212021 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 22122201212021 its reverse (12021210222122), we get a palindrome (34143411434143).

The spelling of 22122201212021 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred one million, two hundred twelve thousand, twenty-one".