11212112102220 has 36 divisors (see below), whose sum is σ = 34010073377280. Its totient is φ = 2989896560544.

The previous prime is 11212112102207. The next prime is 11212112102227. The reversal of 11212112102220 is 2220121121211.

11212112102220 is a `hidden beast` number, since 1 + 1 + 21 + 211 + 210 + 2 + 220 = 666.

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

It is a super-2 number, since 2×11212112102220² (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 a junction number, because it is equal to n+sod(n) for n = 11212112102193 and 11212112102202.

It is not an unprimeable number, because it can be changed into a prime (11212112102227) 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, 31144755660 + ... + 31144756019.

It is an arithmetic number, because the mean of its divisors is an integer number (944724260480).

Almost surely, 2^{11212112102220} is an apocalyptic number.

11212112102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212112102220 is an abundant number, since it is smaller than the sum of its proper divisors (22797961275060).

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

11212112102220 is a wasteful number, since it uses less digits than its factorization.

11212112102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62289511694 (or 62289511689 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11212112102220 its reverse (2220121121211), we get a palindrome (13432233223431).

The spelling of 11212112102220 in words is "eleven trillion, two hundred twelve billion, one hundred twelve million, one hundred two thousand, two hundred twenty".