21101122200101 has 8 divisors (see below), whose sum is σ = 21194481220704. Its totient is φ = 21007766710960.

The previous prime is 21101122200097. The next prime is 21101122200163. The reversal of 21101122200101 is 10100222110112.

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 21101122200101 - 2² = 21101122200097 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 (21101122700101) 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, 11475731 + ... + 13186911.

It is an arithmetic number, because the mean of its divisors is an integer number (2649310152588).

Almost surely, 2^{21101122200101} is an apocalyptic number.

It is an amenable number.

21101122200101 is a deficient number, since it is larger than the sum of its proper divisors (93359020603).

21101122200101 is a wasteful number, since it uses less digits than its factorization.

21101122200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765731.

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

Adding to 21101122200101 its reverse (10100222110112), we get a palindrome (31201344310213).

The spelling of 21101122200101 in words is "twenty-one trillion, one hundred one billion, one hundred twenty-two million, two hundred thousand, one hundred one".