123124421321 has 6 divisors (see below), whose sum is σ = 135335107866. Its totient is φ = 111931292000.

The previous prime is 123124421311. The next prime is 123124421327.

It is a happy number.

123124421321 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 86809783225 + 36314638096 = 294635^2 + 190564^2 .

It is not a de Polignac number, because 123124421321 - 2¹⁰ = 123124420297 is a prime.

It is a super-2 number, since 2×123124421321² (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 (123124421327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 508778480 + ... + 508778721.

It is an arithmetic number, because the mean of its divisors is an integer number (22555851311).

Almost surely, 2^123124421321 is an apocalyptic number.

123124421321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

123124421321 is a deficient number, since it is larger than the sum of its proper divisors (12210686545).

123124421321 is a wasteful number, since it uses less digits than its factorization.

123124421321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017557223 (or 1017557212 counting only the distinct ones).

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

It can be divided in two parts, 123124 and 421321, that added together give a palindrome (544445).

The spelling of 123124421321 in words is "one hundred twenty-three billion, one hundred twenty-four million, four hundred twenty-one thousand, three hundred twenty-one".