1212131411 has 2 divisors, whose sum is σ = 1212131412. Its totient is φ = 1212131410.

The previous prime is 1212131381. The next prime is 1212131423. The reversal of 1212131411 is 1141312121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1212131411 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212131411.

It is not a weakly prime, because it can be changed into another prime (1212131461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606065705 + 606065706.

It is an arithmetic number, because the mean of its divisors is an integer number (606065706).

Almost surely, 2^1212131411 is an apocalyptic number.

1212131411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212131411 is an equidigital number, since it uses as much as digits as its factorization.

1212131411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 17.

The square root of 1212131411 is about 34815.6776610768. The cubic root of 1212131411 is about 1066.2275546842.

Adding to 1212131411 its reverse (1141312121), we get a palindrome (2353443532).

The spelling of 1212131411 in words is "one billion, two hundred twelve million, one hundred thirty-one thousand, four hundred eleven".