22022201002121 has 2 divisors, whose sum is σ = 22022201002122. Its totient is φ = 22022201002120.

The previous prime is 22022201002051. The next prime is 22022201002133. The reversal of 22022201002121 is 12120010222022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21812038352896 + 210162649225 = 4670336^2 + 458435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22022201002121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22022201002121.

It is not a weakly prime, because it can be changed into another prime (22022201002421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011100501060 + 11011100501061.

It is an arithmetic number, because the mean of its divisors is an integer number (11011100501061).

Almost surely, 2^{22022201002121} is an apocalyptic number.

It is an amenable number.

22022201002121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022201002121 is an equidigital number, since it uses as much as digits as its factorization.

22022201002121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22022201002121 its reverse (12120010222022), we get a palindrome (34142211224143).

The spelling of 22022201002121 in words is "twenty-two trillion, twenty-two billion, two hundred one million, two thousand, one hundred twenty-one".