22742220161 has 8 divisors (see below), whose sum is σ = 22817220480. Its totient is φ = 22667344128.

The previous prime is 22742220139. The next prime is 22742220211. The reversal of 22742220161 is 16102224722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22742220161 - 2⁶ = 22742220097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22742220121) 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 in 7 ways as a sum of consecutive naturals, for example, 342860 + ... + 403778.

It is an arithmetic number, because the mean of its divisors is an integer number (2852152560).

Almost surely, 2^22742220161 is an apocalyptic number.

It is an amenable number.

22742220161 is a deficient number, since it is larger than the sum of its proper divisors (75000319).

22742220161 is an equidigital number, since it uses as much as digits as its factorization.

22742220161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62143.

The product of its (nonzero) digits is 5376, while the sum is 29.

Adding to 22742220161 its reverse (16102224722), we get a palindrome (38844444883).

The spelling of 22742220161 in words is "twenty-two billion, seven hundred forty-two million, two hundred twenty thousand, one hundred sixty-one".