1000021002109 has 8 divisors (see below), whose sum is σ = 1024701370560. Its totient is φ = 975354424800.

The previous prime is 1000021002103. The next prime is 1000021002131. The reversal of 1000021002109 is 9012001200001.

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 1000021002109 - 2¹⁵ = 1000020969341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000021002092 and 1000021002101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000021002103) 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, 3300897 + ... + 3591094.

It is an arithmetic number, because the mean of its divisors is an integer number (128087671320).

Almost surely, 2^{1000021002109} is an apocalyptic number.

It is an amenable number.

1000021002109 is a deficient number, since it is larger than the sum of its proper divisors (24680368451).

1000021002109 is an equidigital number, since it uses as much as digits as its factorization.

1000021002109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6895571.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 1000021002109 in words is "one trillion, twenty-one million, two thousand, one hundred nine".