11020121000021 has 8 divisors (see below), whose sum is σ = 12594562782720. Its totient is φ = 9445713913008.

The previous prime is 11020121000017. The next prime is 11020121000069. The reversal of 11020121000021 is 12000012102011.

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

It is a cyclic number.

It is not a de Polignac number, because 11020121000021 - 2² = 11020121000017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020120999966 and 11020121000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020121000081) 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 7 ways as a sum of consecutive naturals, for example, 7989701 + ... + 9266906.

It is an arithmetic number, because the mean of its divisors is an integer number (1574320347840).

Almost surely, 2^{11020121000021} is an apocalyptic number.

It is an amenable number.

11020121000021 is a deficient number, since it is larger than the sum of its proper divisors (1574441782699).

11020121000021 is an equidigital number, since it uses as much as digits as its factorization.

11020121000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17347843.

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

Adding to 11020121000021 its reverse (12000012102011), we get a palindrome (23020133102032).

The spelling of 11020121000021 in words is "eleven trillion, twenty billion, one hundred twenty-one million, twenty-one", and thus it is an aban number.