12011133311212 has 96 divisors (see below), whose sum is σ = 25458272501760. Its totient is φ = 4847005880640.

The previous prime is 12011133311119. The next prime is 12011133311263. The reversal of 12011133311212 is 21211333111021.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63376089 + ... + 63565327.

It is an arithmetic number, because the mean of its divisors is an integer number (265190338560).

Almost surely, 2^{12011133311212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12011133311212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12729136250880).

12011133311212 is an abundant number, since it is smaller than the sum of its proper divisors (13447139190548).

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

12011133311212 is a wasteful number, since it uses less digits than its factorization.

12011133311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190811 (or 190809 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 12011133311212 its reverse (21211333111021), we get a palindrome (33222466422233).

The spelling of 12011133311212 in words is "twelve trillion, eleven billion, one hundred thirty-three million, three hundred eleven thousand, two hundred twelve".