22515011 has 2 divisors, whose sum is σ = 22515012. Its totient is φ = 22515010.

The previous prime is 22515007. The next prime is 22515013. The reversal of 22515011 is 11051522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22515011 - 2² = 22515007 is a prime.

Together with 22515013, 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 (22515013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11257505 + 11257506.

It is an arithmetic number, because the mean of its divisors is an integer number (11257506).

Almost surely, 2^22515011 is an apocalyptic number.

22515011 is a deficient number, since it is larger than the sum of its proper divisors (1).

22515011 is an equidigital number, since it uses as much as digits as its factorization.

22515011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 22515011 is about 4744.9985247627. The cubic root of 22515011 is about 282.3735764492.

Adding to 22515011 its reverse (11051522), we get a palindrome (33566533).

The spelling of 22515011 in words is "twenty-two million, five hundred fifteen thousand, eleven".