22210221601 has 2 divisors, whose sum is σ = 22210221602. Its totient is φ = 22210221600.

The previous prime is 22210221599. The next prime is 22210221611. The reversal of 22210221601 is 10612201222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21911104576 + 299117025 = 148024^2 + 17295^2 .

It is a cyclic number.

It is not a de Polignac number, because 22210221601 - 2¹ = 22210221599 is a prime.

Together with 22210221599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22210221611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105110800 + 11105110801.

It is an arithmetic number, because the mean of its divisors is an integer number (11105110801).

Almost surely, 2^22210221601 is an apocalyptic number.

It is an amenable number.

22210221601 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210221601 is an equidigital number, since it uses as much as digits as its factorization.

22210221601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 22210221601 its reverse (10612201222), we get a palindrome (32822422823).

The spelling of 22210221601 in words is "twenty-two billion, two hundred ten million, two hundred twenty-one thousand, six hundred one".