22135651 has 2 divisors, whose sum is σ = 22135652. Its totient is φ = 22135650.

The previous prime is 22135639. The next prime is 22135693. The reversal of 22135651 is 15653122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22135651 is a prime.

It is not a weakly prime, because it can be changed into another prime (22135051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11067825 + 11067826.

It is an arithmetic number, because the mean of its divisors is an integer number (11067826).

Almost surely, 2^22135651 is an apocalyptic number.

22135651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22135651 is an equidigital number, since it uses as much as digits as its factorization.

22135651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 25.

The square root of 22135651 is about 4704.8539828564. The cubic root of 22135651 is about 280.7786616672.

Adding to 22135651 its reverse (15653122), we get a palindrome (37788773).

The spelling of 22135651 in words is "twenty-two million, one hundred thirty-five thousand, six hundred fifty-one".