12120020001100 has 72 divisors (see below), whose sum is σ = 28841610018816. Its totient is φ = 4384205160000.

The previous prime is 12120020001091. The next prime is 12120020001109. The reversal of 12120020001100 is 110002002121.

It is an interprime number because it is at equal distance from previous prime (12120020001091) and next prime (12120020001109).

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

It is not an unprimeable number, because it can be changed into a prime (12120020001109) 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, 28633356 + ... + 29053555.

It is an arithmetic number, because the mean of its divisors is an integer number (400577916928).

Almost surely, 2^{12120020001100} is an apocalyptic number.

12120020001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120020001100 is an abundant number, since it is smaller than the sum of its proper divisors (16721590017716).

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

12120020001100 is a wasteful number, since it uses less digits than its factorization.

12120020001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57687127 (or 57687120 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12120020001100 its reverse (110002002121), we get a palindrome (12230022003221).

The spelling of 12120020001100 in words is "twelve trillion, one hundred twenty billion, twenty million, one thousand, one hundred".