122560231428 has 72 divisors (see below), whose sum is σ = 313863207840. Its totient is φ = 40319959680.

The previous prime is 122560231421. The next prime is 122560231429. The reversal of 122560231428 is 824132065221.

122560231428 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 602 + 3 + 1 + 42 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 122560231392 and 122560231401.

It is not an unprimeable number, because it can be changed into a prime (122560231421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1717623 + ... + 1787553.

It is an arithmetic number, because the mean of its divisors is an integer number (4359211220).

Almost surely, 2^122560231428 is an apocalyptic number.

122560231428 is a gapful number since it is divisible by the number (18) 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 122560231428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156931603920).

122560231428 is an abundant number, since it is smaller than the sum of its proper divisors (191302976412).

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

122560231428 is a wasteful number, since it uses less digits than its factorization.

122560231428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70577 (or 70572 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 122560231428 its reverse (824132065221), we get a palindrome (946692296649).

The spelling of 122560231428 in words is "one hundred twenty-two billion, five hundred sixty million, two hundred thirty-one thousand, four hundred twenty-eight".