101224520 has 32 divisors (see below), whose sum is σ = 228753720. Its totient is φ = 40312320.

The previous prime is 101224499. The next prime is 101224547. The reversal of 101224520 is 25422101.

It can be written as a sum of positive squares in 4 ways, for example, as 61559716 + 39664804 = 7846^2 + 6298^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3890 + ... + 14750.

Almost surely, 2^101224520 is an apocalyptic number.

101224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101224520 is an abundant number, since it is smaller than the sum of its proper divisors (127529200).

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

101224520 is a wasteful number, since it uses less digits than its factorization.

101224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105 (or 11101 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 101224520 is about 10061.0397077042. The cubic root of 101224520 is about 466.0457751886.

Adding to 101224520 its reverse (25422101), we get a palindrome (126646621).

The spelling of 101224520 in words is "one hundred one million, two hundred twenty-four thousand, five hundred twenty".