12111012012220 has 96 divisors (see below), whose sum is σ = 28127519098560. Its totient is φ = 4343332700160.

The previous prime is 12111012012217. The next prime is 12111012012241. The reversal of 12111012012220 is 2221021011121.

It is a super-2 number, since 2×12111012012220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12111012012194 and 12111012012203.

It is a congruent number.

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, 293700724 + ... + 293741956.

It is an arithmetic number, because the mean of its divisors is an integer number (292994990610).

Almost surely, 2^{12111012012220} is an apocalyptic number.

12111012012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111012012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14063759549280).

12111012012220 is an abundant number, since it is smaller than the sum of its proper divisors (16016507086340).

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

12111012012220 is a wasteful number, since it uses less digits than its factorization.

12111012012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59615 (or 59613 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111012012220 its reverse (2221021011121), we get a palindrome (14332033023341).

The spelling of 12111012012220 in words is "twelve trillion, one hundred eleven billion, twelve million, twelve thousand, two hundred twenty".