12100121012 has 24 divisors (see below), whose sum is σ = 24232508160. Its totient is φ = 5178852000.

The previous prime is 12100120999. The next prime is 12100121017. The reversal of 12100121012 is 21012100121.

It is a junction number, because it is equal to n+sod(n) for n = 12100120984 and 12100121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100121017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266687 + ... + 308742.

It is an arithmetic number, because the mean of its divisors is an integer number (1009687840).

Almost surely, 2^12100121012 is an apocalyptic number.

It is an amenable number.

12100121012 is an abundant number, since it is smaller than the sum of its proper divisors (12132387148).

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

12100121012 is a wasteful number, since it uses less digits than its factorization.

12100121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576191 (or 576189 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12100121012 its reverse (21012100121), we get a palindrome (33112221133).

The spelling of 12100121012 in words is "twelve billion, one hundred million, one hundred twenty-one thousand, twelve".