22212222211001 has 2 divisors, whose sum is σ = 22212222211002. Its totient is φ = 22212222211000.

The previous prime is 22212222210989. The next prime is 22212222211021. The reversal of 22212222211001 is 10011222221222.

It is an a-pointer prime, because the next prime (22212222211021) can be obtained adding 22212222211001 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., 18362287695376 + 3849934515625 = 4285124^2 + 1962125^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212222211001 - 2³⁰ = 22211148469177 is a prime.

It is not a weakly prime, because it can be changed into another prime (22212222211021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106111105500 + 11106111105501.

It is an arithmetic number, because the mean of its divisors is an integer number (11106111105501).

Almost surely, 2^{22212222211001} is an apocalyptic number.

It is an amenable number.

22212222211001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212222211001 is an equidigital number, since it uses as much as digits as its factorization.

22212222211001 is an evil number, because the sum of its binary digits is even.

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

Adding to 22212222211001 its reverse (10011222221222), we get a palindrome (32223444432223).

The spelling of 22212222211001 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, one".