1212401371 has 2 divisors, whose sum is σ = 1212401372. Its totient is φ = 1212401370.

The previous prime is 1212401353. The next prime is 1212401401. The reversal of 1212401371 is 1731042121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1212401371 - 2⁵ = 1212401339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212401321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606200685 + 606200686.

It is an arithmetic number, because the mean of its divisors is an integer number (606200686).

Almost surely, 2^1212401371 is an apocalyptic number.

1212401371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212401371 is an equidigital number, since it uses as much as digits as its factorization.

1212401371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1212401371 is about 34819.5544342543. The cubic root of 1212401371 is about 1066.3067038100.

Adding to 1212401371 its reverse (1731042121), we get a palindrome (2943443492).

The spelling of 1212401371 in words is "one billion, two hundred twelve million, four hundred one thousand, three hundred seventy-one".