101244220 has 96 divisors (see below), whose sum is σ = 274337280. Its totient is φ = 30455040.

The previous prime is 101244181. The next prime is 101244239. The reversal of 101244220 is 22442101.

It is a junction number, because it is equal to n+sod(n) for n = 101244194 and 101244203.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 43527 + ... + 45793.

It is an arithmetic number, because the mean of its divisors is an integer number (2857680).

Almost surely, 2^101244220 is an apocalyptic number.

101244220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101244220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137168640).

101244220 is an abundant number, since it is smaller than the sum of its proper divisors (173093060).

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

101244220 is a wasteful number, since it uses less digits than its factorization.

101244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 101244220 is about 10062.0186841409. The cubic root of 101244220 is about 466.0760066854.

Adding to 101244220 its reverse (22442101), we get a palindrome (123686321).

The spelling of 101244220 in words is "one hundred one million, two hundred forty-four thousand, two hundred twenty".