21012200012201 has 8 divisors (see below), whose sum is σ = 21112527348480. Its totient is φ = 20911940769168.

The previous prime is 21012200012149. The next prime is 21012200012267. The reversal of 21012200012201 is 10221000221012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21012200012201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21012200812201) 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, 16404626 + ... + 17639051.

It is an arithmetic number, because the mean of its divisors is an integer number (2639065918560).

Almost surely, 2^{21012200012201} is an apocalyptic number.

It is an amenable number.

21012200012201 is a deficient number, since it is larger than the sum of its proper divisors (100327336279).

21012200012201 is a wasteful number, since it uses less digits than its factorization.

21012200012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34046623.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21012200012201 its reverse (10221000221012), we get a palindrome (31233200233213).

The spelling of 21012200012201 in words is "twenty-one trillion, twelve billion, two hundred million, twelve thousand, two hundred one".