421002143443363 has 2 divisors, whose sum is σ = 421002143443364. Its totient is φ = 421002143443362.

The previous prime is 421002143443243. The next prime is 421002143443393. The reversal of 421002143443363 is 363344341200124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421002143443363 - 2³³ = 420993553508771 is a prime.

It is not a weakly prime, because it can be changed into another prime (421002143443393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210501071721681 + 210501071721682.

It is an arithmetic number, because the mean of its divisors is an integer number (210501071721682).

Almost surely, 2^{421002143443363} is an apocalyptic number.

421002143443363 is a deficient number, since it is larger than the sum of its proper divisors (1).

421002143443363 is an equidigital number, since it uses as much as digits as its factorization.

421002143443363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 421002143443363 its reverse (363344341200124), we get a palindrome (784346484643487).

The spelling of 421002143443363 in words is "four hundred twenty-one trillion, two billion, one hundred forty-three million, four hundred forty-three thousand, three hundred sixty-three".