11201000111221 has 8 divisors (see below), whose sum is σ = 11273985714944. Its totient is φ = 11128035288240.

The previous prime is 11201000111173. The next prime is 11201000111261. The reversal of 11201000111221 is 12211100010211.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11201000111221 is a prime.

It is a super-2 number, since 2×11201000111221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201000111261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112925 + ... + 6270418.

It is an arithmetic number, because the mean of its divisors is an integer number (1409248214368).

Almost surely, 2^{11201000111221} is an apocalyptic number.

It is an amenable number.

11201000111221 is a deficient number, since it is larger than the sum of its proper divisors (72985603723).

11201000111221 is a wasteful number, since it uses less digits than its factorization.

11201000111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390371.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11201000111221 its reverse (12211100010211), we get a palindrome (23412100121432).

The spelling of 11201000111221 in words is "eleven trillion, two hundred one billion, one hundred eleven thousand, two hundred twenty-one".