22001222212001 has 2 divisors, whose sum is σ = 22001222212002. Its totient is φ = 22001222212000.

The previous prime is 22001222211989. The next prime is 22001222212051. The reversal of 22001222212001 is 10021222210022.

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., 18534919248400 + 3466302963601 = 4305220^2 + 1861801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001222212001 is a prime.

It is not a weakly prime, because it can be changed into another prime (22001222212051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000611106000 + 11000611106001.

It is an arithmetic number, because the mean of its divisors is an integer number (11000611106001).

Almost surely, 2^{22001222212001} is an apocalyptic number.

It is an amenable number.

22001222212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001222212001 is an equidigital number, since it uses as much as digits as its factorization.

22001222212001 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 22001222212001 its reverse (10021222210022), we get a palindrome (32022444422023).

The spelling of 22001222212001 in words is "twenty-two trillion, one billion, two hundred twenty-two million, two hundred twelve thousand, one".