421224143403101 has 4 divisors (see below), whose sum is σ = 421224809848032. Its totient is φ = 421223476958172.

The previous prime is 421224143403079. The next prime is 421224143403127. The reversal of 421224143403101 is 101304341422124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421224143403101 - 2²² = 421224139208797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421224143403901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332273495 + ... + 333538788.

It is an arithmetic number, because the mean of its divisors is an integer number (105306202462008).

Almost surely, 2^{421224143403101} is an apocalyptic number.

It is an amenable number.

421224143403101 is a deficient number, since it is larger than the sum of its proper divisors (666444931).

421224143403101 is an equidigital number, since it uses as much as digits as its factorization.

421224143403101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666444930.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 421224143403101 its reverse (101304341422124), we get a palindrome (522528484825225).

The spelling of 421224143403101 in words is "four hundred twenty-one trillion, two hundred twenty-four billion, one hundred forty-three million, four hundred three thousand, one hundred one".