1101011000021 has 8 divisors (see below), whose sum is σ = 1101554417304. Its totient is φ = 1100467694080.

The previous prime is 1101010999999. The next prime is 1101011000027. The reversal of 1101011000021 is 1200001101011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127601841796 + 973409158225 = 357214^2 + 986615^2 .

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 1101011000021 - 2¹⁴ = 1101010983637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101010999972 and 1101011000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101011000027) 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, 25084931 + ... + 25128783.

It is an arithmetic number, because the mean of its divisors is an integer number (137694302163).

Almost surely, 2^{1101011000021} is an apocalyptic number.

It is an amenable number.

1101011000021 is a deficient number, since it is larger than the sum of its proper divisors (543417283).

1101011000021 is an equidigital number, since it uses as much as digits as its factorization.

1101011000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55671.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1101011000021 its reverse (1200001101011), we get a palindrome (2301012101032).

The spelling of 1101011000021 in words is "one trillion, one hundred one billion, eleven million, twenty-one", and thus it is an aban number.