11121220200021 has 8 divisors (see below), whose sum is σ = 14831102542080. Its totient is φ = 7412742328992.

The previous prime is 11121220200019. The next prime is 11121220200037. The reversal of 11121220200021 is 12000202212111.

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

It is not a de Polignac number, because 11121220200021 - 2¹ = 11121220200019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121220200091) 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, 351099280 + ... + 351130953.

It is an arithmetic number, because the mean of its divisors is an integer number (1853887817760).

Almost surely, 2^{11121220200021} is an apocalyptic number.

It is an amenable number.

11121220200021 is a deficient number, since it is larger than the sum of its proper divisors (3709882342059).

11121220200021 is an equidigital number, since it uses as much as digits as its factorization.

11121220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702235515.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11121220200021 its reverse (12000202212111), we get a palindrome (23121422412132).

The spelling of 11121220200021 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, twenty-one".