221112431230189 has 2 divisors, whose sum is σ = 221112431230190. Its totient is φ = 221112431230188.

The previous prime is 221112431230181. The next prime is 221112431230253. The reversal of 221112431230189 is 981032134211122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206115323018089 + 14997108212100 = 14356717^2 + 3872610^2 .

It is a cyclic number.

It is not a de Polignac number, because 221112431230189 - 2³ = 221112431230181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221112431230181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110556215615094 + 110556215615095.

It is an arithmetic number, because the mean of its divisors is an integer number (110556215615095).

Almost surely, 2^{221112431230189} is an apocalyptic number.

It is an amenable number.

221112431230189 is a deficient number, since it is larger than the sum of its proper divisors (1).

221112431230189 is an equidigital number, since it uses as much as digits as its factorization.

221112431230189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 221112431230189 in words is "two hundred twenty-one trillion, one hundred twelve billion, four hundred thirty-one million, two hundred thirty thousand, one hundred eighty-nine".