120021300 has 108 divisors (see below), whose sum is σ = 429965536. Its totient is φ = 27432000.

The previous prime is 120021289. The next prime is 120021323. The reversal of 120021300 is 3120021.

It is a happy number.

It is a super-2 number, since 2×120021300² = 28810224907380000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 35 ways as a sum of consecutive naturals, for example, 3226 + ... + 15825.

Almost surely, 2^120021300 is an apocalyptic number.

120021300 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 120021300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214982768).

120021300 is an abundant number, since it is smaller than the sum of its proper divisors (309944236).

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

120021300 is a wasteful number, since it uses less digits than its factorization.

120021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19078 (or 19068 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 120021300 is about 10955.4233145050. The cubic root of 120021300 is about 493.2715966491.

Adding to 120021300 its reverse (3120021), we get a palindrome (123141321).

It can be divided in two parts, 1200 and 21300, that added together give a square (22500 = 150²).

The spelling of 120021300 in words is "one hundred twenty million, twenty-one thousand, three hundred".