12102111012 has 24 divisors (see below), whose sum is σ = 28278107200. Its totient is φ = 4028344416.

The previous prime is 12102110927. The next prime is 12102111013. The reversal of 12102111012 is 21011120121.

12102111012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12102111012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12102111013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 702712 + ... + 719727.

Almost surely, 2^12102111012 is an apocalyptic number.

12102111012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102111012 is an abundant number, since it is smaller than the sum of its proper divisors (16175996188).

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

12102111012 is a wasteful number, since it uses less digits than its factorization.

12102111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423155 (or 1423153 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12102111012 its reverse (21011120121), we get a palindrome (33113231133).

The spelling of 12102111012 in words is "twelve billion, one hundred two million, one hundred eleven thousand, twelve".