1100020000021 has 8 divisors (see below), whose sum is σ = 1103389344000. Its totient is φ = 1096655766960.

The previous prime is 1100019999971. The next prime is 1100020000039. The reversal of 1100020000021 is 1200000200011.

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 1100020000021 - 2⁷ = 1100019999893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100019999959 and 1100020000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100020000621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 846390 + ... + 1707751.

It is an arithmetic number, because the mean of its divisors is an integer number (137923668000).

Almost surely, 2^{1100020000021} is an apocalyptic number.

It is an amenable number.

1100020000021 is a deficient number, since it is larger than the sum of its proper divisors (3369343979).

1100020000021 is an equidigital number, since it uses as much as digits as its factorization.

1100020000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555459.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 1100020000021 its reverse (1200000200011), we get a palindrome (2300020200032).

The spelling of 1100020000021 in words is "one trillion, one hundred billion, twenty million, twenty-one", and thus it is an aban number.