22721510611 has 2 divisors, whose sum is σ = 22721510612. Its totient is φ = 22721510610.

The previous prime is 22721510593. The next prime is 22721510621. The reversal of 22721510611 is 11601512722.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22721510611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22721510611.

It is not a weakly prime, because it can be changed into another prime (22721510621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360755305 + 11360755306.

It is an arithmetic number, because the mean of its divisors is an integer number (11360755306).

Almost surely, 2^22721510611 is an apocalyptic number.

22721510611 is a deficient number, since it is larger than the sum of its proper divisors (1).

22721510611 is an equidigital number, since it uses as much as digits as its factorization.

22721510611 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 28.

The spelling of 22721510611 in words is "twenty-two billion, seven hundred twenty-one million, five hundred ten thousand, six hundred eleven".