22043142481 has 2 divisors, whose sum is σ = 22043142482. Its totient is φ = 22043142480.

The previous prime is 22043142437. The next prime is 22043142487. The reversal of 22043142481 is 18424134022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15740211600 + 6302930881 = 125460^2 + 79391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22043142481 is a prime.

It is a super-2 number, since 2×22043142481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22043142487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11021571240 + 11021571241.

It is an arithmetic number, because the mean of its divisors is an integer number (11021571241).

Almost surely, 2^22043142481 is an apocalyptic number.

It is an amenable number.

22043142481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22043142481 is an equidigital number, since it uses as much as digits as its factorization.

22043142481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 31.

The spelling of 22043142481 in words is "twenty-two billion, forty-three million, one hundred forty-two thousand, four hundred eighty-one".