11221200012021 has 16 divisors (see below), whose sum is σ = 15550870445760. Its totient is φ = 7188609899520.

The previous prime is 11221200012017. The next prime is 11221200012149. The reversal of 11221200012021 is 12021000212211.

It is not a de Polignac number, because 11221200012021 - 2² = 11221200012017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221200012521) 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, 305619820 + ... + 305656533.

It is an arithmetic number, because the mean of its divisors is an integer number (971929402860).

Almost surely, 2^{11221200012021} is an apocalyptic number.

It is an amenable number.

11221200012021 is a deficient number, since it is larger than the sum of its proper divisors (4329670433739).

11221200012021 is a wasteful number, since it uses less digits than its factorization.

11221200012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611276596.

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

Adding to 11221200012021 its reverse (12021000212211), we get a palindrome (23242200224232).

The spelling of 11221200012021 in words is "eleven trillion, two hundred twenty-one billion, two hundred million, twelve thousand, twenty-one".