12011023201212 has 120 divisors (see below), whose sum is σ = 36473060956640. Its totient is φ = 3375463155840.

The previous prime is 12011023201211. The next prime is 12011023201213. The reversal of 12011023201212 is 21210232011021.

12011023201212 is a `hidden beast` number, since 1 + 20 + 110 + 2 + 320 + 1 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (12011023201211) and next prime (12011023201213).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011023201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 43270387 + ... + 43547082.

Almost surely, 2^{12011023201212} is an apocalyptic number.

12011023201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011023201212 is an abundant number, since it is smaller than the sum of its proper divisors (24462037755428).

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

12011023201212 is a wasteful number, since it uses less digits than its factorization.

12011023201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86817553 (or 86817542 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12011023201212 its reverse (21210232011021), we get a palindrome (33221255212233).

The spelling of 12011023201212 in words is "twelve trillion, eleven billion, twenty-three million, two hundred one thousand, two hundred twelve".