1264202213 has 2 divisors, whose sum is σ = 1264202214. Its totient is φ = 1264202212.

The previous prime is 1264202207. The next prime is 1264202237. The reversal of 1264202213 is 3122024621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103369089 + 160833124 = 33217^2 + 12682^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264202213 - 2¹⁴ = 1264185829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264202243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632101106 + 632101107.

It is an arithmetic number, because the mean of its divisors is an integer number (632101107).

Almost surely, 2^1264202213 is an apocalyptic number.

It is an amenable number.

1264202213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264202213 is an equidigital number, since it uses as much as digits as its factorization.

1264202213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1264202213 is about 35555.6213980293. The cubic root of 1264202213 is about 1081.2816896589.

Adding to 1264202213 its reverse (3122024621), we get a palindrome (4386226834).

The spelling of 1264202213 in words is "one billion, two hundred sixty-four million, two hundred two thousand, two hundred thirteen".