421233332123 has 4 divisors (see below), whose sum is σ = 439547824848. Its totient is φ = 402918839400.

The previous prime is 421233332111. The next prime is 421233332141. The reversal of 421233332123 is 321233332124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421233332123 - 2¹⁴ = 421233315739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421230332123) 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, 9157246328 + ... + 9157246373.

It is an arithmetic number, because the mean of its divisors is an integer number (109886956212).

Almost surely, 2^421233332123 is an apocalyptic number.

421233332123 is a deficient number, since it is larger than the sum of its proper divisors (18314492725).

421233332123 is a wasteful number, since it uses less digits than its factorization.

421233332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18314492724.

The product of its digits is 15552, while the sum is 29.

Adding to 421233332123 its reverse (321233332124), we get a palindrome (742466664247).

Subtracting from 421233332123 its reverse (321233332124), we obtain a palindrome (99999999999).

The spelling of 421233332123 in words is "four hundred twenty-one billion, two hundred thirty-three million, three hundred thirty-two thousand, one hundred twenty-three".