21111112200101 has 8 divisors (see below), whose sum is σ = 26320347678144. Its totient is φ = 16450217298720.

The previous prime is 21111112200091. The next prime is 21111112200127. The reversal of 21111112200101 is 10100221111112.

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 21111112200101 - 2¹⁴ = 21111112183717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111112200161) 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, 137085144080 + ... + 137085144233.

It is an arithmetic number, because the mean of its divisors is an integer number (3290043459768).

Almost surely, 2^{21111112200101} is an apocalyptic number.

It is an amenable number.

21111112200101 is a deficient number, since it is larger than the sum of its proper divisors (5209235478043).

21111112200101 is a wasteful number, since it uses less digits than its factorization.

21111112200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274170288331.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21111112200101 its reverse (10100221111112), we get a palindrome (31211333311213).

The spelling of 21111112200101 in words is "twenty-one trillion, one hundred eleven billion, one hundred twelve million, two hundred thousand, one hundred one".