123121121448 has 64 divisors (see below), whose sum is σ = 342910310400. Its totient is φ = 36577094400.

The previous prime is 123121121447. The next prime is 123121121507. The reversal of 123121121448 is 844121121321.

It is a super-2 number, since 2×123121121448² (a number of 23 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (123121121447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6794728 + ... + 6812823.

It is an arithmetic number, because the mean of its divisors is an integer number (5357973600).

Almost surely, 2^123121121448 is an apocalyptic number.

It is an amenable number.

123121121448 is an abundant number, since it is smaller than the sum of its proper divisors (219789188952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123121121448 is a wasteful number, since it uses less digits than its factorization.

123121121448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13607602 (or 13607598 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

Adding to 123121121448 its reverse (844121121321), we get a palindrome (967242242769).

The spelling of 123121121448 in words is "one hundred twenty-three billion, one hundred twenty-one million, one hundred twenty-one thousand, four hundred forty-eight".