22230329981 has 2 divisors, whose sum is σ = 22230329982. Its totient is φ = 22230329980.

The previous prime is 22230329917. The next prime is 22230330013. The reversal of 22230329981 is 18992303222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21058363225 + 1171966756 = 145115^2 + 34234^2 .

It is a cyclic number.

It is not a de Polignac number, because 22230329981 - 2⁶ = 22230329917 is a prime.

It is a super-2 number, since 2×22230329981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22230329281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115164990 + 11115164991.

It is an arithmetic number, because the mean of its divisors is an integer number (11115164991).

Almost surely, 2^22230329981 is an apocalyptic number.

It is an amenable number.

22230329981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22230329981 is an equidigital number, since it uses as much as digits as its factorization.

22230329981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 22230329981 in words is "twenty-two billion, two hundred thirty million, three hundred twenty-nine thousand, nine hundred eighty-one".