22215607 has 2 divisors, whose sum is σ = 22215608. Its totient is φ = 22215606.

The previous prime is 22215587. The next prime is 22215629. The reversal of 22215607 is 70651222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22215607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22215667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107803 + 11107804.

It is an arithmetic number, because the mean of its divisors is an integer number (11107804).

Almost surely, 2^22215607 is an apocalyptic number.

22215607 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215607 is an equidigital number, since it uses as much as digits as its factorization.

22215607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 22215607 is about 4713.3435054110. The cubic root of 22215607 is about 281.1163215260.

Adding to 22215607 its reverse (70651222), we get a palindrome (92866829).

It can be divided in two parts, 22215 and 607, that added together give a palindrome (22822).

The spelling of 22215607 in words is "twenty-two million, two hundred fifteen thousand, six hundred seven".