1421321039197 has 2 divisors, whose sum is σ = 1421321039198. Its totient is φ = 1421321039196.

The previous prime is 1421321039153. The next prime is 1421321039207. The reversal of 1421321039197 is 7919301231241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106901784836 + 314419254361 = 1052094^2 + 560731^2 .

It is an emirp because it is prime and its reverse (7919301231241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421321039197 - 2³¹ = 1419173555549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421321037197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710660519598 + 710660519599.

It is an arithmetic number, because the mean of its divisors is an integer number (710660519599).

Almost surely, 2^{1421321039197} is an apocalyptic number.

It is an amenable number.

1421321039197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421321039197 is an equidigital number, since it uses as much as digits as its factorization.

1421321039197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 1421321039197 in words is "one trillion, four hundred twenty-one billion, three hundred twenty-one million, thirty-nine thousand, one hundred ninety-seven".