22006351481 has 2 divisors, whose sum is σ = 22006351482. Its totient is φ = 22006351480.

The previous prime is 22006351463. The next prime is 22006351483. The reversal of 22006351481 is 18415360022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13516387600 + 8489963881 = 116260^2 + 92141^2 .

It is a cyclic number.

It is not a de Polignac number, because 22006351481 - 2⁶ = 22006351417 is a prime.

It is a super-2 number, since 2×22006351481² (a number of 21 digits) contains 22 as substring.

Together with 22006351483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22006351483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11003175740 + 11003175741.

It is an arithmetic number, because the mean of its divisors is an integer number (11003175741).

Almost surely, 2^22006351481 is an apocalyptic number.

It is an amenable number.

22006351481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22006351481 is an equidigital number, since it uses as much as digits as its factorization.

22006351481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The spelling of 22006351481 in words is "twenty-two billion, six million, three hundred fifty-one thousand, four hundred eighty-one".