11220331333421 has 16 divisors (see below), whose sum is σ = 12836225041920. Its totient is φ = 9607686721920.

The previous prime is 11220331333381. The next prime is 11220331333427. The reversal of 11220331333421 is 12433313302211.

It is a de Polignac number, because none of the positive numbers 2^k-11220331333421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220331333427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81628211 + ... + 81765551.

It is an arithmetic number, because the mean of its divisors is an integer number (802264065120).

Almost surely, 2^{11220331333421} is an apocalyptic number.

It is an amenable number.

11220331333421 is a deficient number, since it is larger than the sum of its proper divisors (1615893708499).

11220331333421 is a wasteful number, since it uses less digits than its factorization.

11220331333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149084.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 11220331333421 its reverse (12433313302211), we get a palindrome (23653644635632).

The spelling of 11220331333421 in words is "eleven trillion, two hundred twenty billion, three hundred thirty-one million, three hundred thirty-three thousand, four hundred twenty-one".