1212232001 has 2 divisors, whose sum is σ = 1212232002. Its totient is φ = 1212232000.

The previous prime is 1212231973. The next prime is 1212232003. The reversal of 1212232001 is 1002322121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 627753025 + 584478976 = 25055^2 + 24176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212232001 is a prime.

Together with 1212232003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1212232003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606116000 + 606116001.

It is an arithmetic number, because the mean of its divisors is an integer number (606116001).

Almost surely, 2^1212232001 is an apocalyptic number.

It is an amenable number.

1212232001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212232001 is an equidigital number, since it uses as much as digits as its factorization.

1212232001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212232001 is about 34817.1222389215. The cubic root of 1212232001 is about 1066.2570478734.

Adding to 1212232001 its reverse (1002322121), we get a palindrome (2214554122).

The spelling of 1212232001 in words is "one billion, two hundred twelve million, two hundred thirty-two thousand, one".