101132220 has 96 divisors (see below), whose sum is σ = 324979200. Its totient is φ = 23019264.

The previous prime is 101132191. The next prime is 101132233. The reversal of 101132220 is 22231101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101132196 and 101132205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163071 + ... + 163689.

It is an arithmetic number, because the mean of its divisors is an integer number (3385200).

Almost surely, 2^101132220 is an apocalyptic number.

101132220 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 101132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162489600).

101132220 is an abundant number, since it is smaller than the sum of its proper divisors (223846980).

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

101132220 is a wasteful number, since it uses less digits than its factorization.

101132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 101132220 is about 10056.4516605013. The cubic root of 101132220 is about 465.9040799216.

Adding to 101132220 its reverse (22231101), we get a palindrome (123363321).

The spelling of 101132220 in words is "one hundred one million, one hundred thirty-two thousand, two hundred twenty".