11201223150021 has 32 divisors (see below), whose sum is σ = 15836747719680. Its totient is φ = 7017884630784.

The previous prime is 11201223150011. The next prime is 11201223150041. The reversal of 11201223150021 is 12005132210211.

It is a de Polignac number, because none of the positive numbers 2^k-11201223150021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11201223150021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201223150011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 559407816 + ... + 559427838.

It is an arithmetic number, because the mean of its divisors is an integer number (494898366240).

Almost surely, 2^{11201223150021} is an apocalyptic number.

It is an amenable number.

11201223150021 is a deficient number, since it is larger than the sum of its proper divisors (4635524569659).

11201223150021 is a wasteful number, since it uses less digits than its factorization.

11201223150021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35625.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11201223150021 its reverse (12005132210211), we get a palindrome (23206355360232).

The spelling of 11201223150021 in words is "eleven trillion, two hundred one billion, two hundred twenty-three million, one hundred fifty thousand, twenty-one".