101224220 has 24 divisors (see below), whose sum is σ = 214679808. Its totient is φ = 40088000.

The previous prime is 101224213. The next prime is 101224237. The reversal of 101224220 is 22422101.

It is a junction number, because it is equal to n+sod(n) for n = 101224195 and 101224204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23036 + ... + 27075.

It is an arithmetic number, because the mean of its divisors is an integer number (8944992).

Almost surely, 2^101224220 is an apocalyptic number.

101224220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101224220 is an abundant number, since it is smaller than the sum of its proper divisors (113455588).

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

101224220 is a wasteful number, since it uses less digits than its factorization.

101224220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50221 (or 50219 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 101224220 is about 10061.0247986972. The cubic root of 101224220 is about 466.0453147802.

Adding to 101224220 its reverse (22422101), we get a palindrome (123646321).

The spelling of 101224220 in words is "one hundred one million, two hundred twenty-four thousand, two hundred twenty".