12021111123012 has 36 divisors (see below), whose sum is σ = 30387058003120. Its totient is φ = 4006989510192.

The previous prime is 12021111123011. The next prime is 12021111123037. The reversal of 12021111123012 is 21032111112021.

It is a happy number.

12021111123012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×12021111123012² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12021111123011) 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, 1165083 + ... + 5039805.

Almost surely, 2^{12021111123012} is an apocalyptic number.

12021111123012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021111123012 is an abundant number, since it is smaller than the sum of its proper divisors (18365946880108).

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

12021111123012 is a wasteful number, since it uses less digits than its factorization.

12021111123012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3960912 (or 3960907 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 12021111123012 its reverse (21032111112021), we get a palindrome (33053222235033).

The spelling of 12021111123012 in words is "twelve trillion, twenty-one billion, one hundred eleven million, one hundred twenty-three thousand, twelve".