1212133147 has 2 divisors, whose sum is σ = 1212133148. Its totient is φ = 1212133146.

The previous prime is 1212133123. The next prime is 1212133151. The reversal of 1212133147 is 7413312121.

It is a strong prime.

It is an emirp because it is prime and its reverse (7413312121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212133147 is a prime.

It is a super-2 number, since 2×1212133147² = 2938533532112247218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212133157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606066573 + 606066574.

It is an arithmetic number, because the mean of its divisors is an integer number (606066574).

Almost surely, 2^1212133147 is an apocalyptic number.

1212133147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212133147 is an equidigital number, since it uses as much as digits as its factorization.

1212133147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1212133147 is about 34815.7025923648. The cubic root of 1212133147 is about 1066.2280636967.

Adding to 1212133147 its reverse (7413312121), we get a palindrome (8625445268).

The spelling of 1212133147 in words is "one billion, two hundred twelve million, one hundred thirty-three thousand, one hundred forty-seven".