423403011221 has 4 divisors (see below), whose sum is σ = 424782174432. Its totient is φ = 422023848012.

The previous prime is 423403011197. The next prime is 423403011257. The reversal of 423403011221 is 122110304324.

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 423403011221 - 2¹⁰ = 423403010197 is a prime.

It is a super-2 number, since 2×423403011221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423403041221) 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, 689581145 + ... + 689581758.

It is an arithmetic number, because the mean of its divisors is an integer number (106195543608).

Almost surely, 2^423403011221 is an apocalyptic number.

It is an amenable number.

423403011221 is a deficient number, since it is larger than the sum of its proper divisors (1379163211).

423403011221 is a wasteful number, since it uses less digits than its factorization.

423403011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379163210.

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

Adding to 423403011221 its reverse (122110304324), we get a palindrome (545513315545).

The spelling of 423403011221 in words is "four hundred twenty-three billion, four hundred three million, eleven thousand, two hundred twenty-one".