421431121203019 has 2 divisors, whose sum is σ = 421431121203020. Its totient is φ = 421431121203018.

The previous prime is 421431121202983. The next prime is 421431121203049. The reversal of 421431121203019 is 910302121134124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421431121203019 - 2¹⁵ = 421431121170251 is a prime.

It is a super-2 number, since 2×421431121203019² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421431121203049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210715560601509 + 210715560601510.

It is an arithmetic number, because the mean of its divisors is an integer number (210715560601510).

Almost surely, 2^{421431121203019} is an apocalyptic number.

421431121203019 is a deficient number, since it is larger than the sum of its proper divisors (1).

421431121203019 is an equidigital number, since it uses as much as digits as its factorization.

421431121203019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 421431121203019 in words is "four hundred twenty-one trillion, four hundred thirty-one billion, one hundred twenty-one million, two hundred three thousand, nineteen".