21202100211001 has 8 divisors (see below), whose sum is σ = 22449326065920. Its totient is φ = 19954879188288.

The previous prime is 21202100210987. The next prime is 21202100211029. The reversal of 21202100211001 is 10011200120212.

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 21202100211001 - 2²¹ = 21202098113849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202100212001) 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, 11871580 + ... + 13540258.

It is an arithmetic number, because the mean of its divisors is an integer number (2806165758240).

Almost surely, 2^{21202100211001} is an apocalyptic number.

It is an amenable number.

21202100211001 is a deficient number, since it is larger than the sum of its proper divisors (1247225854919).

21202100211001 is a wasteful number, since it uses less digits than its factorization.

21202100211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416103.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21202100211001 its reverse (10011200120212), we get a palindrome (31213300331213).

The spelling of 21202100211001 in words is "twenty-one trillion, two hundred two billion, one hundred million, two hundred eleven thousand, one".