11112212002221 has 24 divisors (see below), whose sum is σ = 17636124586080. Its totient is φ = 6686223040800.

The previous prime is 11112212002219. The next prime is 11112212002273. The reversal of 11112212002221 is 12220021221111.

11112212002221 is a `hidden beast` number, since 11 + 11 + 221 + 200 + 2 + 221 = 666.

It is not a de Polignac number, because 11112212002221 - 2¹ = 11112212002219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11112212002194 and 11112212002203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112212002121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403743670 + ... + 403771191.

It is an arithmetic number, because the mean of its divisors is an integer number (734838524420).

Almost surely, 2^{11112212002221} is an apocalyptic number.

11112212002221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11112212002221 is a deficient number, since it is larger than the sum of its proper divisors (6523912583859).

11112212002221 is a wasteful number, since it uses less digits than its factorization.

11112212002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807515017 (or 807515014 counting only the distinct ones).

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

Adding to 11112212002221 its reverse (12220021221111), we get a palindrome (23332233223332).

The spelling of 11112212002221 in words is "eleven trillion, one hundred twelve billion, two hundred twelve million, two thousand, two hundred twenty-one".