1212136507 has 2 divisors, whose sum is σ = 1212136508. Its totient is φ = 1212136506.

The previous prime is 1212136477. The next prime is 1212136511. The reversal of 1212136507 is 7056312121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212136507 is a prime.

It is a super-2 number, since 2×1212136507² = 2938549823204322098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212436507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606068253 + 606068254.

It is an arithmetic number, because the mean of its divisors is an integer number (606068254).

Almost surely, 2^1212136507 is an apocalyptic number.

1212136507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212136507 is an equidigital number, since it uses as much as digits as its factorization.

1212136507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1212136507 is about 34815.7508464201. The cubic root of 1212136507 is about 1066.2290488808.

Adding to 1212136507 its reverse (7056312121), we get a palindrome (8268448628).

The spelling of 1212136507 in words is "one billion, two hundred twelve million, one hundred thirty-six thousand, five hundred seven".