22016258981 has 2 divisors, whose sum is σ = 22016258982. Its totient is φ = 22016258980.

The previous prime is 22016258977. The next prime is 22016259011. The reversal of 22016258981 is 18985261022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12594450625 + 9421808356 = 112225^2 + 97066^2 .

It is a cyclic number.

It is not a de Polignac number, because 22016258981 - 2² = 22016258977 is a prime.

It is a super-2 number, since 2×22016258981² (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 (22016258941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11008129490 + 11008129491.

It is an arithmetic number, because the mean of its divisors is an integer number (11008129491).

Almost surely, 2^22016258981 is an apocalyptic number.

It is an amenable number.

22016258981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22016258981 is an equidigital number, since it uses as much as digits as its factorization.

22016258981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 22016258981 in words is "twenty-two billion, sixteen million, two hundred fifty-eight thousand, nine hundred eighty-one".