1212421203107 has 2 divisors, whose sum is σ = 1212421203108. Its totient is φ = 1212421203106.

The previous prime is 1212421203079. The next prime is 1212421203127. The reversal of 1212421203107 is 7013021242121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212421203107 - 2¹⁸ = 1212420940963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1212421203127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606210601553 + 606210601554.

It is an arithmetic number, because the mean of its divisors is an integer number (606210601554).

Almost surely, 2^{1212421203107} is an apocalyptic number.

1212421203107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212421203107 is an equidigital number, since it uses as much as digits as its factorization.

1212421203107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 1212421203107 its reverse (7013021242121), we get a palindrome (8225442445228).

The spelling of 1212421203107 in words is "one trillion, two hundred twelve billion, four hundred twenty-one million, two hundred three thousand, one hundred seven".