124220020122 has 128 divisors (see below), whose sum is σ = 305856000000. Its totient is φ = 37055715840.

The previous prime is 124220020087. The next prime is 124220020129. The reversal of 124220020122 is 221020022421.

124220020122 is a `hidden beast` number, since 1 + 242 + 200 + 201 + 22 = 666.

It is a super-2 number, since 2×124220020122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 124220020095 and 124220020104.

It is not an unprimeable number, because it can be changed into a prime (124220020129) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 16561129 + ... + 16568627.

It is an arithmetic number, because the mean of its divisors is an integer number (2389500000).

Almost surely, 2^124220020122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 124220020122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152928000000).

124220020122 is an abundant number, since it is smaller than the sum of its proper divisors (181635979878).

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

124220020122 is a wasteful number, since it uses less digits than its factorization.

124220020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953 (or 7947 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 124220020122 its reverse (221020022421), we get a palindrome (345240042543).

The spelling of 124220020122 in words is "one hundred twenty-four billion, two hundred twenty million, twenty thousand, one hundred twenty-two".