22013420161 has 2 divisors, whose sum is σ = 22013420162. Its totient is φ = 22013420160.

The previous prime is 22013420153. The next prime is 22013420239. The reversal of 22013420161 is 16102431022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17015637136 + 4997783025 = 130444^2 + 70695^2 .

It is a cyclic number.

It is not a de Polignac number, because 22013420161 - 2³ = 22013420153 is a prime.

It is not a weakly prime, because it can be changed into another prime (22013420461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006710080 + 11006710081.

It is an arithmetic number, because the mean of its divisors is an integer number (11006710081).

Almost surely, 2^22013420161 is an apocalyptic number.

It is an amenable number.

22013420161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22013420161 is an equidigital number, since it uses as much as digits as its factorization.

22013420161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 22013420161 its reverse (16102431022), we get a palindrome (38115851183).

The spelling of 22013420161 in words is "twenty-two billion, thirteen million, four hundred twenty thousand, one hundred sixty-one".