22222001001001 has 2 divisors, whose sum is σ = 22222001001002. Its totient is φ = 22222001001000.

The previous prime is 22222001000957. The next prime is 22222001001047. The reversal of 22222001001001 is 10010010022222.

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., 13652470755625 + 8569530245376 = 3694925^2 + 2927376^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222001001001 is a prime.

22222001001001 is a modest number, since divided by 1001001 gives 22222 as remainder.

It is not a weakly prime, because it can be changed into another prime (22222001041001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111000500500 + 11111000500501.

It is an arithmetic number, because the mean of its divisors is an integer number (11111000500501).

Almost surely, 2^{22222001001001} is an apocalyptic number.

It is an amenable number.

22222001001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222001001001 is an equidigital number, since it uses as much as digits as its factorization.

22222001001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22222001001001 its reverse (10010010022222), we get a palindrome (32232011023223).

The spelling of 22222001001001 in words is "twenty-two trillion, two hundred twenty-two billion, one million, one thousand, one".