22221563723 has 2 divisors, whose sum is σ = 22221563724. Its totient is φ = 22221563722.

The previous prime is 22221563701. The next prime is 22221563729. The reversal of 22221563723 is 32736512222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221563723 - 2⁶ = 22221563659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22221563729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110781861 + 11110781862.

It is an arithmetic number, because the mean of its divisors is an integer number (11110781862).

Almost surely, 2^22221563723 is an apocalyptic number.

22221563723 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221563723 is an equidigital number, since it uses as much as digits as its factorization.

22221563723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The spelling of 22221563723 in words is "twenty-two billion, two hundred twenty-one million, five hundred sixty-three thousand, seven hundred twenty-three".