11000211221021 has 4 divisors (see below), whose sum is σ = 12000230422944. Its totient is φ = 10000192019100.

The previous prime is 11000211220991. The next prime is 11000211221089. The reversal of 11000211221021 is 12012211200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000211221021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000211220987 and 11000211221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000211221221) 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, 500009600945 + ... + 500009600966.

It is an arithmetic number, because the mean of its divisors is an integer number (3000057605736).

Almost surely, 2^{11000211221021} is an apocalyptic number.

11000211221021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11000211221021 is a deficient number, since it is larger than the sum of its proper divisors (1000019201923).

11000211221021 is a wasteful number, since it uses less digits than its factorization.

11000211221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000019201922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11000211221021 its reverse (12012211200011), we get a palindrome (23012422421032).

The spelling of 11000211221021 in words is "eleven trillion, two hundred eleven million, two hundred twenty-one thousand, twenty-one".