123421124321 has 8 divisors (see below), whose sum is σ = 138984492288. Its totient is φ = 108581634000.

The previous prime is 123421124291. The next prime is 123421124339.

It is a happy number.

123421124321 is nontrivially palindromic in base 10.

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 123421124321 - 2¹⁴ = 123421107937 is a prime.

It is a super-2 number, since 2×123421124321² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123421124921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180969050 + ... + 180969731.

It is an arithmetic number, because the mean of its divisors is an integer number (17373061536).

Almost surely, 2^123421124321 is an apocalyptic number.

123421124321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123421124321 is a deficient number, since it is larger than the sum of its proper divisors (15563367967).

123421124321 is a wasteful number, since it uses less digits than its factorization.

123421124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361938823.

The product of its digits is 2304, while the sum is 26.

It can be divided in two parts, 123421 and 124321, that added together give a palindrome (247742).

The spelling of 123421124321 in words is "one hundred twenty-three billion, four hundred twenty-one million, one hundred twenty-four thousand, three hundred twenty-one".