421621230101 has 8 divisors (see below), whose sum is σ = 425316739224. Its totient is φ = 417940185600.

The previous prime is 421621230091. The next prime is 421621230157. The reversal of 421621230101 is 101032126124.

It can be written as a sum of positive squares in 4 ways, for example, as 218206699876 + 203414530225 = 467126^2 + 451015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421621230101 - 2²⁶ = 421554121237 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 (421621230601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3557600 + ... + 3674201.

It is an arithmetic number, because the mean of its divisors is an integer number (53164592403).

Almost surely, 2^421621230101 is an apocalyptic number.

It is an amenable number.

421621230101 is a deficient number, since it is larger than the sum of its proper divisors (3695509123).

421621230101 is a wasteful number, since it uses less digits than its factorization.

421621230101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7232311.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 421621230101 its reverse (101032126124), we get a palindrome (522653356225).

The spelling of 421621230101 in words is "four hundred twenty-one billion, six hundred twenty-one million, two hundred thirty thousand, one hundred one".