1212101263 has 2 divisors, whose sum is σ = 1212101264. Its totient is φ = 1212101262.

The previous prime is 1212101249. The next prime is 1212101273. The reversal of 1212101263 is 3621012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212101263 - 2¹⁷ = 1211970191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212101263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212101273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050631 + 606050632.

It is an arithmetic number, because the mean of its divisors is an integer number (606050632).

Almost surely, 2^1212101263 is an apocalyptic number.

1212101263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101263 is an equidigital number, since it uses as much as digits as its factorization.

1212101263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1212101263 is about 34815.2446925194. The cubic root of 1212101263 is about 1066.2187149125.

Adding to 1212101263 its reverse (3621012121), we get a palindrome (4833113384).

The spelling of 1212101263 in words is "one billion, two hundred twelve million, one hundred one thousand, two hundred sixty-three".