11200111021221 has 8 divisors (see below), whose sum is σ = 15215245161120. Its totient is φ = 7325858781072.

The previous prime is 11200111021219. The next prime is 11200111021243. The reversal of 11200111021221 is 12212011100211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11200111021221 - 2¹ = 11200111021219 is a prime.

It is a super-2 number, since 2×11200111021221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11200111021221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200111021271) 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 7 ways as a sum of consecutive naturals, for example, 35220474751 + ... + 35220475068.

It is an arithmetic number, because the mean of its divisors is an integer number (1901905645140).

Almost surely, 2^{11200111021221} is an apocalyptic number.

It is an amenable number.

11200111021221 is a deficient number, since it is larger than the sum of its proper divisors (4015134139899).

11200111021221 is an equidigital number, since it uses as much as digits as its factorization.

11200111021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70440949875.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11200111021221 its reverse (12212011100211), we get a palindrome (23412122121432).

The spelling of 11200111021221 in words is "eleven trillion, two hundred billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".