12011123121102 has 24 divisors (see below), whose sum is σ = 29741828681136. Its totient is φ = 3431749463136.

The previous prime is 12011123121061. The next prime is 12011123121119. The reversal of 12011123121102 is 20112132111021.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47663186863 + ... + 47663187114.

It is an arithmetic number, because the mean of its divisors is an integer number (1239242861714).

Almost surely, 2^{12011123121102} is an apocalyptic number.

12011123121102 is an abundant number, since it is smaller than the sum of its proper divisors (17730705560034).

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

12011123121102 is a wasteful number, since it uses less digits than its factorization.

12011123121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95326373992 (or 95326373989 counting only the distinct ones).

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

Adding to 12011123121102 its reverse (20112132111021), we get a palindrome (32123255232123).

The spelling of 12011123121102 in words is "twelve trillion, eleven billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred two".