12120201100 has 36 divisors (see below), whose sum is σ = 30058100464. Its totient is φ = 4155497280.

The previous prime is 12120201029. The next prime is 12120201103. The reversal of 12120201100 is 110202121.

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 (12120201103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8656587 + ... + 8657986.

Almost surely, 2^12120201100 is an apocalyptic number.

12120201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120201100 is an abundant number, since it is smaller than the sum of its proper divisors (17937899364).

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

12120201100 is a wasteful number, since it uses less digits than its factorization.

12120201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17314594 (or 17314587 counting only the distinct ones).

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

Adding to 12120201100 its reverse (110202121), we get a palindrome (12230403221).

The spelling of 12120201100 in words is "twelve billion, one hundred twenty million, two hundred one thousand, one hundred".