1212132347 has 2 divisors, whose sum is σ = 1212132348. Its totient is φ = 1212132346.

The previous prime is 1212132307. The next prime is 1212132353. The reversal of 1212132347 is 7432312121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212132347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212132307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606066173 + 606066174.

It is an arithmetic number, because the mean of its divisors is an integer number (606066174).

Almost surely, 2^1212132347 is an apocalyptic number.

1212132347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212132347 is an equidigital number, since it uses as much as digits as its factorization.

1212132347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 1212132347 is about 34815.6911032942. The cubic root of 1212132347 is about 1066.2278291288.

Adding to 1212132347 its reverse (7432312121), we get a palindrome (8644444468).

The spelling of 1212132347 in words is "one billion, two hundred twelve million, one hundred thirty-two thousand, three hundred forty-seven".