123355001224 has 64 divisors (see below), whose sum is σ = 292359110400. Its totient is φ = 47480857344.

The previous prime is 123355001221. The next prime is 123355001233. The reversal of 123355001224 is 422100553321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 123355001192 and 123355001201.

It is not an unprimeable number, because it can be changed into a prime (123355001221) 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, 2262844 + ... + 2316715.

It is an arithmetic number, because the mean of its divisors is an integer number (4568111100).

Almost surely, 2^123355001224 is an apocalyptic number.

123355001224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123355001224 is an abundant number, since it is smaller than the sum of its proper divisors (169004109176).

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

123355001224 is a wasteful number, since it uses less digits than its factorization.

123355001224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579622 (or 4579618 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 123355001224 its reverse (422100553321), we get a palindrome (545455554545).

The spelling of 123355001224 in words is "one hundred twenty-three billion, three hundred fifty-five million, one thousand, two hundred twenty-four".