123297821288 has 8 divisors (see below), whose sum is σ = 231183414930. Its totient is φ = 61648910640.

The previous prime is 123297821281. The next prime is 123297821303. The reversal of 123297821288 is 882128792321.

It can be written as a sum of positive squares in only one way, i.e., 103247827684 + 20049993604 = 321322^2 + 141598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (123297821281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7706113823 + ... + 7706113838.

Almost surely, 2^123297821288 is an apocalyptic number.

It is an amenable number.

123297821288 is a deficient number, since it is larger than the sum of its proper divisors (107885593642).

123297821288 is a wasteful number, since it uses less digits than its factorization.

123297821288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15412227667 (or 15412227663 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 53.

The spelling of 123297821288 in words is "one hundred twenty-three billion, two hundred ninety-seven million, eight hundred twenty-one thousand, two hundred eighty-eight".