21202100120001 has 16 divisors (see below), whose sum is σ = 29048403384000. Its totient is φ = 13745657158848.

The previous prime is 21202100119997. The next prime is 21202100120057. The reversal of 21202100120001 is 10002100120212.

It is not a de Polignac number, because 21202100120001 - 2² = 21202100119997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21202100120101) 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 15 ways as a sum of consecutive naturals, for example, 48785691 + ... + 49218368.

It is an arithmetic number, because the mean of its divisors is an integer number (1815525211500).

Almost surely, 2^{21202100120001} is an apocalyptic number.

It is an amenable number.

21202100120001 is a deficient number, since it is larger than the sum of its proper divisors (7846303263999).

21202100120001 is a wasteful number, since it uses less digits than its factorization.

21202100120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98006048.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21202100120001 its reverse (10002100120212), we get a palindrome (31204200240213).

The spelling of 21202100120001 in words is "twenty-one trillion, two hundred two billion, one hundred million, one hundred twenty thousand, one".