213232211173 has 2 divisors, whose sum is σ = 213232211174. Its totient is φ = 213232211172.

The previous prime is 213232211039. The next prime is 213232211293. The reversal of 213232211173 is 371112232312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115013904769 + 98218306404 = 339137^2 + 313398^2 .

It is a cyclic number.

It is not a de Polignac number, because 213232211173 - 2²¹ = 213230114021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213232211873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616105586 + 106616105587.

It is an arithmetic number, because the mean of its divisors is an integer number (106616105587).

Almost surely, 2^213232211173 is an apocalyptic number.

It is an amenable number.

213232211173 is a deficient number, since it is larger than the sum of its proper divisors (1).

213232211173 is an equidigital number, since it uses as much as digits as its factorization.

213232211173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 28.

Adding to 213232211173 its reverse (371112232312), we get a palindrome (584344443485).

The spelling of 213232211173 in words is "two hundred thirteen billion, two hundred thirty-two million, two hundred eleven thousand, one hundred seventy-three".