120231100 has 72 divisors (see below), whose sum is σ = 294512400. Its totient is φ = 42201600.

The previous prime is 120231091. The next prime is 120231109. The reversal of 120231100 is 1132021.

It is an interprime number because it is at equal distance from previous prime (120231091) and next prime (120231109).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120231109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30016 + ... + 33784.

It is an arithmetic number, because the mean of its divisors is an integer number (4090450).

Almost surely, 2^120231100 is an apocalyptic number.

120231100 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 120231100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147256200).

120231100 is an abundant number, since it is smaller than the sum of its proper divisors (174281300).

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

120231100 is a wasteful number, since it uses less digits than its factorization.

120231100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823 (or 3816 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 120231100 is about 10964.9943000441. The cubic root of 120231100 is about 493.5588460497.

Adding to 120231100 its reverse (1132021), we get a palindrome (121363121).

The spelling of 120231100 in words is "one hundred twenty million, two hundred thirty-one thousand, one hundred".