1122001000021 has 8 divisors (see below), whose sum is σ = 1224021533184. Its totient is φ = 1019983873920.

The previous prime is 1122000999929. The next prime is 1122001000031. The reversal of 1122001000021 is 1200001002211.

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

It is not a de Polignac number, because 1122001000021 - 2⁷ = 1122000999893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122000999971 and 1122001000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122001000031) 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, 137116 + ... + 1504261.

It is an arithmetic number, because the mean of its divisors is an integer number (153002691648).

Almost surely, 2^{1122001000021} is an apocalyptic number.

1122001000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1122001000021 is a deficient number, since it is larger than the sum of its proper divisors (102020533163).

1122001000021 is a wasteful number, since it uses less digits than its factorization.

1122001000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703531.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1122001000021 its reverse (1200001002211), we get a palindrome (2322002002232).

The spelling of 1122001000021 in words is "one trillion, one hundred twenty-two billion, one million, twenty-one", and thus it is an aban number.