123321155215 has 8 divisors (see below), whose sum is σ = 151984991520. Its totient is φ = 95990520672.

The previous prime is 123321155171. The next prime is 123321155291. The reversal of 123321155215 is 512551123321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 123321155215 - 2¹¹ = 123321153167 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333300235 + ... + 333300604.

It is an arithmetic number, because the mean of its divisors is an integer number (18998123940).

Almost surely, 2^123321155215 is an apocalyptic number.

123321155215 is a deficient number, since it is larger than the sum of its proper divisors (28663836305).

123321155215 is an equidigital number, since it uses as much as digits as its factorization.

123321155215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666600881.

The product of its digits is 9000, while the sum is 31.

Adding to 123321155215 its reverse (512551123321), we get a palindrome (635872278536).

The spelling of 123321155215 in words is "one hundred twenty-three billion, three hundred twenty-one million, one hundred fifty-five thousand, two hundred fifteen".