22133230981 has 2 divisors, whose sum is σ = 22133230982. Its totient is φ = 22133230980.

The previous prime is 22133230883. The next prime is 22133231063. The reversal of 22133230981 is 18903233122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14782912225 + 7350318756 = 121585^2 + 85734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22133230981 is a prime.

It is a super-2 number, since 2×22133230981² (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 (22133230081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11066615490 + 11066615491.

It is an arithmetic number, because the mean of its divisors is an integer number (11066615491).

Almost surely, 2^22133230981 is an apocalyptic number.

It is an amenable number.

22133230981 is a deficient number, since it is larger than the sum of its proper divisors (1).

22133230981 is an equidigital number, since it uses as much as digits as its factorization.

22133230981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 22133230981 in words is "twenty-two billion, one hundred thirty-three million, two hundred thirty thousand, nine hundred eighty-one".