11121100210221 has 16 divisors (see below), whose sum is σ = 15187274752320. Its totient is φ = 7234821256320.

The previous prime is 11121100210189. The next prime is 11121100210249. The reversal of 11121100210221 is 12201200112111.

It is a happy number.

It is not a de Polignac number, because 11121100210221 - 2⁵ = 11121100210189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11121100210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121100210291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40489936 + ... + 40763673.

It is an arithmetic number, because the mean of its divisors is an integer number (949204672020).

Almost surely, 2^{11121100210221} is an apocalyptic number.

It is an amenable number.

11121100210221 is a deficient number, since it is larger than the sum of its proper divisors (4066174542099).

11121100210221 is a wasteful number, since it uses less digits than its factorization.

11121100210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81254716.

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

Adding to 11121100210221 its reverse (12201200112111), we get a palindrome (23322300322332).

The spelling of 11121100210221 in words is "eleven trillion, one hundred twenty-one billion, one hundred million, two hundred ten thousand, two hundred twenty-one".