12010221173 has 2 divisors, whose sum is σ = 12010221174. Its totient is φ = 12010221172.

The previous prime is 12010221169. The next prime is 12010221193. The reversal of 12010221173 is 37112201021.

It is an a-pointer prime, because the next prime (12010221193) can be obtained adding 12010221173 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11947145809 + 63075364 = 109303^2 + 7942^2 .

It is a cyclic number.

It is not a de Polignac number, because 12010221173 - 2² = 12010221169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12010221193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005110586 + 6005110587.

It is an arithmetic number, because the mean of its divisors is an integer number (6005110587).

Almost surely, 2^12010221173 is an apocalyptic number.

It is an amenable number.

12010221173 is a deficient number, since it is larger than the sum of its proper divisors (1).

12010221173 is an equidigital number, since it uses as much as digits as its factorization.

12010221173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 12010221173 its reverse (37112201021), we get a palindrome (49122422194).

The spelling of 12010221173 in words is "twelve billion, ten million, two hundred twenty-one thousand, one hundred seventy-three".