122012503520 has 96 divisors (see below), whose sum is σ = 296387138880. Its totient is φ = 47436943360.

The previous prime is 122012503477. The next prime is 122012503523. The reversal of 122012503520 is 25305210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122012503523) 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, 1730069 + ... + 1799211.

It is an arithmetic number, because the mean of its divisors is an integer number (3087366030).

Almost surely, 2^122012503520 is an apocalyptic number.

122012503520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122012503520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148193569440).

122012503520 is an abundant number, since it is smaller than the sum of its proper divisors (174374635360).

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

122012503520 is a wasteful number, since it uses less digits than its factorization.

122012503520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69468 (or 69460 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 122012503520 its reverse (25305210221), we get a palindrome (147317713741).

The spelling of 122012503520 in words is "one hundred twenty-two billion, twelve million, five hundred three thousand, five hundred twenty".