21012002200001 has 8 divisors (see below), whose sum is σ = 21071944454400. Its totient is φ = 20952067796320.

The previous prime is 21012002199983. The next prime is 21012002200037. The reversal of 21012002200001 is 10000220021012.

It is a happy number.

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 21012002200001 - 2²⁶ = 21011935091137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012002400001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3418856 + ... + 7328886.

It is an arithmetic number, because the mean of its divisors is an integer number (2633993056800).

Almost surely, 2^{21012002200001} is an apocalyptic number.

It is an amenable number.

21012002200001 is a deficient number, since it is larger than the sum of its proper divisors (59942254399).

21012002200001 is a wasteful number, since it uses less digits than its factorization.

21012002200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925359.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21012002200001 its reverse (10000220021012), we get a palindrome (31012222221013).

The spelling of 21012002200001 in words is "twenty-one trillion, twelve billion, two million, two hundred thousand, one".