21100102021211 has 8 divisors (see below), whose sum is σ = 21113526720000. Its totient is φ = 21086678508840.

The previous prime is 21100102021153. The next prime is 21100102021231. The reversal of 21100102021211 is 11212020100112.

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 21100102021211 - 2¹⁸ = 21100101759067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21100102021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36751646 + ... + 37321356.

It is an arithmetic number, because the mean of its divisors is an integer number (2639190840000).

Almost surely, 2^{21100102021211} is an apocalyptic number.

21100102021211 is a deficient number, since it is larger than the sum of its proper divisors (13424698789).

21100102021211 is a wasteful number, since it uses less digits than its factorization.

21100102021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593209.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21100102021211 its reverse (11212020100112), we get a palindrome (32312122121323).

The spelling of 21100102021211 in words is "twenty-one trillion, one hundred billion, one hundred two million, twenty-one thousand, two hundred eleven".