1421719127197 has 2 divisors, whose sum is σ = 1421719127198. Its totient is φ = 1421719127196.

The previous prime is 1421719127183. The next prime is 1421719127207. The reversal of 1421719127197 is 7917219171241.

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., 1309859649081 + 111859478116 = 1144491^2 + 334454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1421719127197 - 2⁷ = 1421719127069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421719127597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710859563598 + 710859563599.

It is an arithmetic number, because the mean of its divisors is an integer number (710859563599).

Almost surely, 2^{1421719127197} is an apocalyptic number.

It is an amenable number.

1421719127197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421719127197 is an equidigital number, since it uses as much as digits as its factorization.

1421719127197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 52.

The spelling of 1421719127197 in words is "one trillion, four hundred twenty-one billion, seven hundred nineteen million, one hundred twenty-seven thousand, one hundred ninety-seven".