21224352334189 has 2 divisors, whose sum is σ = 21224352334190. Its totient is φ = 21224352334188.

The previous prime is 21224352334183. The next prime is 21224352334193. The reversal of 21224352334189 is 98143325342212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20586710158564 + 637642175625 = 4537258^2 + 798525^2 .

It is a cyclic number.

It is not a de Polignac number, because 21224352334189 - 2⁷ = 21224352334061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21224352334183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612176167094 + 10612176167095.

It is an arithmetic number, because the mean of its divisors is an integer number (10612176167095).

Almost surely, 2^{21224352334189} is an apocalyptic number.

It is an amenable number.

21224352334189 is a deficient number, since it is larger than the sum of its proper divisors (1).

21224352334189 is an equidigital number, since it uses as much as digits as its factorization.

21224352334189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 49.

The spelling of 21224352334189 in words is "twenty-one trillion, two hundred twenty-four billion, three hundred fifty-two million, three hundred thirty-four thousand, one hundred eighty-nine".