1212122473 has 2 divisors, whose sum is σ = 1212122474. Its totient is φ = 1212122472.

The previous prime is 1212122467. The next prime is 1212122477. The reversal of 1212122473 is 3742212121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 659308329 + 552814144 = 25677^2 + 23512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212122473 - 2²¹ = 1210025321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212122477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606061236 + 606061237.

It is an arithmetic number, because the mean of its divisors is an integer number (606061237).

Almost surely, 2^1212122473 is an apocalyptic number.

It is an amenable number.

1212122473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212122473 is an equidigital number, since it uses as much as digits as its factorization.

1212122473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 25.

The square root of 1212122473 is about 34815.5492991278. The cubic root of 1212122473 is about 1066.2249339658.

Adding to 1212122473 its reverse (3742212121), we get a palindrome (4954334594).

The spelling of 1212122473 in words is "one billion, two hundred twelve million, one hundred twenty-two thousand, four hundred seventy-three".