1002200000021 has 8 divisors (see below), whose sum is σ = 1093358541600. Its totient is φ = 911049700240.

The previous prime is 1002199999951. The next prime is 1002200000033. The reversal of 1002200000021 is 1200000022001.

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 1002200000021 - 2¹⁰ = 1002199998997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002199999954 and 1002200000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002200000071) 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, 1804811 + ... + 2293848.

It is an arithmetic number, because the mean of its divisors is an integer number (136669817700).

Almost surely, 2^{1002200000021} is an apocalyptic number.

1002200000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002200000021 is a deficient number, since it is larger than the sum of its proper divisors (91158541579).

1002200000021 is a wasteful number, since it uses less digits than its factorization.

1002200000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120899.

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

Adding to 1002200000021 its reverse (1200000022001), we get a palindrome (2202200022022).

The spelling of 1002200000021 in words is "one trillion, two billion, two hundred million, twenty-one", and thus it is an aban number.