101120520 has 64 divisors (see below), whose sum is σ = 310432320. Its totient is φ = 26337024.

The previous prime is 101120497. The next prime is 101120521. The reversal of 101120520 is 25021101.

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 = 101120496 and 101120505.

It is not an unprimeable number, because it can be changed into a prime (101120521) 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 15 ways as a sum of consecutive naturals, for example, 4639 + ... + 14958.

It is an arithmetic number, because the mean of its divisors is an integer number (4850505).

Almost surely, 2^101120520 is an apocalyptic number.

101120520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101120520 is an abundant number, since it is smaller than the sum of its proper divisors (209311800).

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

101120520 is a wasteful number, since it uses less digits than its factorization.

101120520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19654 (or 19650 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 101120520 is about 10055.8699275597. The cubic root of 101120520 is about 465.8861123937.

Adding to 101120520 its reverse (25021101), we get a palindrome (126141621).

The spelling of 101120520 in words is "one hundred one million, one hundred twenty thousand, five hundred twenty".