22130081 has 2 divisors, whose sum is σ = 22130082. Its totient is φ = 22130080.

The previous prime is 22130077. The next prime is 22130083. The reversal of 22130081 is 18003122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20784481 + 1345600 = 4559^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 22130081 - 2² = 22130077 is a prime.

It is a super-2 number, since 2×22130081² = 979480970133122, which contains 22 as substring.

Together with 22130083, 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 (22130083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065040 + 11065041.

It is an arithmetic number, because the mean of its divisors is an integer number (11065041).

Almost surely, 2^22130081 is an apocalyptic number.

It is an amenable number.

22130081 is a deficient number, since it is larger than the sum of its proper divisors (1).

22130081 is an equidigital number, since it uses as much as digits as its factorization.

22130081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 22130081 is about 4704.2620037579. The cubic root of 22130081 is about 280.7551088874.

The spelling of 22130081 in words is "twenty-two million, one hundred thirty thousand, eighty-one".