1212030173 has 2 divisors, whose sum is σ = 1212030174. Its totient is φ = 1212030172.

The previous prime is 1212030143. The next prime is 1212030179. The reversal of 1212030173 is 3710302121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 753941764 + 458088409 = 27458^2 + 21403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212030173 - 2³⁰ = 138288349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212030179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606015086 + 606015087.

It is an arithmetic number, because the mean of its divisors is an integer number (606015087).

Almost surely, 2^1212030173 is an apocalyptic number.

It is an amenable number.

1212030173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212030173 is an equidigital number, since it uses as much as digits as its factorization.

1212030173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1212030173 is about 34814.2237167512. The cubic root of 1212030173 is about 1066.1978698526.

Adding to 1212030173 its reverse (3710302121), we get a palindrome (4922332294).

The spelling of 1212030173 in words is "one billion, two hundred twelve million, thirty thousand, one hundred seventy-three".