11021002000121 has 4 divisors (see below), whose sum is σ = 11021008640100. Its totient is φ = 11020995360144.

The previous prime is 11021002000087. The next prime is 11021002000123. The reversal of 11021002000121 is 12100020012011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4957903423225 + 6063098576896 = 2226635^2 + 2462336^2 .

It is a cyclic number.

It is not a de Polignac number, because 11021002000121 - 2¹⁴ = 11021001983737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11021002000123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1605395 + ... + 4961783.

It is an arithmetic number, because the mean of its divisors is an integer number (2755252160025).

Almost surely, 2^{11021002000121} is an apocalyptic number.

It is an amenable number.

11021002000121 is a deficient number, since it is larger than the sum of its proper divisors (6639979).

11021002000121 is an equidigital number, since it uses as much as digits as its factorization.

11021002000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639978.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11021002000121 its reverse (12100020012011), we get a palindrome (23121022012132).

The spelling of 11021002000121 in words is "eleven trillion, twenty-one billion, two million, one hundred twenty-one", and thus it is an aban number.