211100100121 has 8 divisors (see below), whose sum is σ = 218293320384. Its totient is φ = 204025776240.

The previous prime is 211100100109. The next prime is 211100100149. The reversal of 211100100121 is 121001001112.

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 211100100121 - 2²⁹ = 210563229209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211100100098 and 211100100107.

It is not an unprimeable number, because it can be changed into a prime (211100100521) 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, 29720485 + ... + 29727586.

It is an arithmetic number, because the mean of its divisors is an integer number (27286665048).

Almost surely, 2^211100100121 is an apocalyptic number.

It is an amenable number.

211100100121 is a deficient number, since it is larger than the sum of its proper divisors (7193220263).

211100100121 is an equidigital number, since it uses as much as digits as its factorization.

211100100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59448191.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 211100100121 its reverse (121001001112), we get a palindrome (332101101233).

Subtracting from 211100100121 its reverse (121001001112), we obtain a palindrome (90099099009).

The spelling of 211100100121 in words is "two hundred eleven billion, one hundred million, one hundred thousand, one hundred twenty-one".