421543222147 has 2 divisors, whose sum is σ = 421543222148. Its totient is φ = 421543222146.

The previous prime is 421543222081. The next prime is 421543222171. The reversal of 421543222147 is 741222345124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421543222147 - 2⁷ = 421543222019 is a prime.

It is not a weakly prime, because it can be changed into another prime (421543222187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210771611073 + 210771611074.

It is an arithmetic number, because the mean of its divisors is an integer number (210771611074).

Almost surely, 2^421543222147 is an apocalyptic number.

421543222147 is a deficient number, since it is larger than the sum of its proper divisors (1).

421543222147 is an equidigital number, since it uses as much as digits as its factorization.

421543222147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 37.

The spelling of 421543222147 in words is "four hundred twenty-one billion, five hundred forty-three million, two hundred twenty-two thousand, one hundred forty-seven".