22135312237 has 2 divisors, whose sum is σ = 22135312238. Its totient is φ = 22135312236.

The previous prime is 22135312201. The next prime is 22135312273. The reversal of 22135312237 is 73221353122.

Together with next prime (22135312273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (22135312201) and next prime (22135312273).

It can be written as a sum of positive squares in only one way, i.e., 22054923081 + 80389156 = 148509^2 + 8966^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22135312237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22135312199 and 22135312208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22135312337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11067656118 + 11067656119.

It is an arithmetic number, because the mean of its divisors is an integer number (11067656119).

Almost surely, 2^22135312237 is an apocalyptic number.

It is an amenable number.

22135312237 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135312237 is an equidigital number, since it uses as much as digits as its factorization.

22135312237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 31.

Adding to 22135312237 its reverse (73221353122), we get a palindrome (95356665359).

The spelling of 22135312237 in words is "twenty-two billion, one hundred thirty-five million, three hundred twelve thousand, two hundred thirty-seven".