124220403220 has 24 divisors (see below), whose sum is σ = 269858118600. Its totient is φ = 47974776192.

The previous prime is 124220403143. The next prime is 124220403257. The reversal of 124220403220 is 22304022421.

It can be written as a sum of positive squares in 4 ways, for example, as 22944978576 + 101275424644 = 151476^2 + 318238^2 .

It is a super-2 number, since 2×124220403220² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 124220403191 and 124220403200.

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 7 ways as a sum of consecutive naturals, for example, 107085975 + ... + 107087134.

It is an arithmetic number, because the mean of its divisors is an integer number (11244088275).

Almost surely, 2^124220403220 is an apocalyptic number.

124220403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124220403220 is an abundant number, since it is smaller than the sum of its proper divisors (145637715380).

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

124220403220 is a wasteful number, since it uses less digits than its factorization.

124220403220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214173147 (or 214173145 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 124220403220 its reverse (22304022421), we get a palindrome (146524425641).

The spelling of 124220403220 in words is "one hundred twenty-four billion, two hundred twenty million, four hundred three thousand, two hundred twenty".