123321136522 has 8 divisors (see below), whose sum is σ = 186159932676. Its totient is φ = 61267825632.

The previous prime is 123321136513. The next prime is 123321136529. The reversal of 123321136522 is 225631123321.

It can be written as a sum of positive squares in 2 ways, for example, as 122051710881 + 1269425641 = 349359^2 + 35629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (123321136529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196370923 + ... + 196371550.

Almost surely, 2^123321136522 is an apocalyptic number.

123321136522 is a deficient number, since it is larger than the sum of its proper divisors (62838796154).

123321136522 is a wasteful number, since it uses less digits than its factorization.

123321136522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392742632.

The product of its digits is 12960, while the sum is 31.

Adding to 123321136522 its reverse (225631123321), we get a palindrome (348952259843).

The spelling of 123321136522 in words is "one hundred twenty-three billion, three hundred twenty-one million, one hundred thirty-six thousand, five hundred twenty-two".