5221123400 has 48 divisors (see below), whose sum is σ = 12143949300. Its totient is φ = 2087617280.

The previous prime is 5221123387. The next prime is 5221123409. The reversal of 5221123400 is 43211225.

It can be written as a sum of positive squares in 6 ways, for example, as 1951342276 + 3269781124 = 44174^2 + 57182^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (5221123409) 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 11 ways as a sum of consecutive naturals, for example, 842714 + ... + 848886.

Almost surely, 2^5221123400 is an apocalyptic number.

5221123400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5221123400 is an abundant number, since it is smaller than the sum of its proper divisors (6922825900).

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

5221123400 is a wasteful number, since it uses less digits than its factorization.

5221123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10418 (or 10409 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 5221123400 is about 72257.3414955186. The cubic root of 5221123400 is about 1734.8209279038.

Adding to 5221123400 its reverse (43211225), we get a palindrome (5264334625).

The spelling of 5221123400 in words is "five billion, two hundred twenty-one million, one hundred twenty-three thousand, four hundred".