101500120 has 16 divisors (see below), whose sum is σ = 228375360. Its totient is φ = 40600032.

The previous prime is 101500111. The next prime is 101500123. The reversal of 101500120 is 21005101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101500097 and 101500106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101500123) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1268712 + ... + 1268791.

It is an arithmetic number, because the mean of its divisors is an integer number (14273460).

Almost surely, 2^101500120 is an apocalyptic number.

101500120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101500120 is an abundant number, since it is smaller than the sum of its proper divisors (126875240).

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

101500120 is a wasteful number, since it uses less digits than its factorization.

101500120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537514 (or 2537510 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 101500120 is about 10074.7267953032. The cubic root of 101500120 is about 466.4683533790.

Adding to 101500120 its reverse (21005101), we get a palindrome (122505221).

The spelling of 101500120 in words is "one hundred one million, five hundred thousand, one hundred twenty".