122543120215 has 16 divisors (see below), whose sum is σ = 155660234400. Its totient is φ = 92452735872.

The previous prime is 122543120207. The next prime is 122543120221. The reversal of 122543120215 is 512021345221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122543120215 - 2³ = 122543120207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9820800 + ... + 9833269.

It is an arithmetic number, because the mean of its divisors is an integer number (9728764650).

Almost surely, 2^122543120215 is an apocalyptic number.

122543120215 is a deficient number, since it is larger than the sum of its proper divisors (33117114185).

122543120215 is a wasteful number, since it uses less digits than its factorization.

122543120215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19654146.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 122543120215 its reverse (512021345221), we get a palindrome (634564465436).

The spelling of 122543120215 in words is "one hundred twenty-two billion, five hundred forty-three million, one hundred twenty thousand, two hundred fifteen".