421241334121 has 16 divisors (see below), whose sum is σ = 435459483648. Its totient is φ = 407213094400.

The previous prime is 421241334113. The next prime is 421241334133. The reversal of 421241334121 is 121433142124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421241334121 - 2³ = 421241334113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421241334121.

It is not an unprimeable number, because it can be changed into a prime (421241314121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19109376 + ... + 19131406.

It is an arithmetic number, because the mean of its divisors is an integer number (27216217728).

Almost surely, 2^421241334121 is an apocalyptic number.

421241334121 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

421241334121 is a deficient number, since it is larger than the sum of its proper divisors (14218149527).

421241334121 is a wasteful number, since it uses less digits than its factorization.

421241334121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26312.

The product of its digits is 4608, while the sum is 28.

Adding to 421241334121 its reverse (121433142124), we get a palindrome (542674476245).

The spelling of 421241334121 in words is "four hundred twenty-one billion, two hundred forty-one million, three hundred thirty-four thousand, one hundred twenty-one".