21232342193 has 2 divisors, whose sum is σ = 21232342194. Its totient is φ = 21232342192.

The previous prime is 21232342181. The next prime is 21232342207. The reversal of 21232342193 is 39124323212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20744064784 + 488277409 = 144028^2 + 22097^2 .

It is a cyclic number.

It is not a de Polignac number, because 21232342193 - 2⁴ = 21232342177 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232342093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616171096 + 10616171097.

It is an arithmetic number, because the mean of its divisors is an integer number (10616171097).

Almost surely, 2^21232342193 is an apocalyptic number.

It is an amenable number.

21232342193 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232342193 is an equidigital number, since it uses as much as digits as its factorization.

21232342193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The spelling of 21232342193 in words is "twenty-one billion, two hundred thirty-two million, three hundred forty-two thousand, one hundred ninety-three".