423034101221 has 4 divisors (see below), whose sum is σ = 423036998112. Its totient is φ = 423031204332.

The previous prime is 423034101143. The next prime is 423034101251. The reversal of 423034101221 is 122101430324.

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 423034101221 - 2¹⁰ = 423034100197 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 (423034101251) 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, 1217081 + ... + 1525566.

It is an arithmetic number, because the mean of its divisors is an integer number (105759249528).

Almost surely, 2^423034101221 is an apocalyptic number.

It is an amenable number.

423034101221 is a deficient number, since it is larger than the sum of its proper divisors (2896891).

423034101221 is a wasteful number, since it uses less digits than its factorization.

423034101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896890.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 423034101221 its reverse (122101430324), we get a palindrome (545135531545).

The spelling of 423034101221 in words is "four hundred twenty-three billion, thirty-four million, one hundred one thousand, two hundred twenty-one".