22204624861 has 2 divisors, whose sum is σ = 22204624862. Its totient is φ = 22204624860.

The previous prime is 22204624831. The next prime is 22204624877. The reversal of 22204624861 is 16842640222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15111784900 + 7092839961 = 122930^2 + 84219^2 .

It is a cyclic number.

It is not a de Polignac number, because 22204624861 - 2¹¹ = 22204622813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22204624861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22204624831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11102312430 + 11102312431.

It is an arithmetic number, because the mean of its divisors is an integer number (11102312431).

Almost surely, 2^22204624861 is an apocalyptic number.

It is an amenable number.

22204624861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22204624861 is an equidigital number, since it uses as much as digits as its factorization.

22204624861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 37.

The spelling of 22204624861 in words is "twenty-two billion, two hundred four million, six hundred twenty-four thousand, eight hundred sixty-one".