1212403061 has 2 divisors, whose sum is σ = 1212403062. Its totient is φ = 1212403060.

The previous prime is 1212403043. The next prime is 1212403067. The reversal of 1212403061 is 1603042121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1147922161 + 64480900 = 33881^2 + 8030^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212403061 - 2²⁶ = 1145294197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212403067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606201530 + 606201531.

It is an arithmetic number, because the mean of its divisors is an integer number (606201531).

Almost surely, 2^1212403061 is an apocalyptic number.

It is an amenable number.

1212403061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212403061 is an equidigital number, since it uses as much as digits as its factorization.

1212403061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1212403061 is about 34819.5787022187. The cubic root of 1212403061 is about 1066.3071992613.

Adding to 1212403061 its reverse (1603042121), we get a palindrome (2815445182).

The spelling of 1212403061 in words is "one billion, two hundred twelve million, four hundred three thousand, sixty-one".