211121100101 has 8 divisors (see below), whose sum is σ = 214600666464. Its totient is φ = 207642132720.

The previous prime is 211121100061. The next prime is 211121100191. The reversal of 211121100101 is 101001121112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211121100101 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 (211121100191) 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, 590930 + ... + 878316.

It is an arithmetic number, because the mean of its divisors is an integer number (26825083308).

Almost surely, 2^211121100101 is an apocalyptic number.

It is an amenable number.

211121100101 is a deficient number, since it is larger than the sum of its proper divisors (3479566363).

211121100101 is a wasteful number, since it uses less digits than its factorization.

211121100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299491.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211121100101 its reverse (101001121112), we get a palindrome (312122221213).

The spelling of 211121100101 in words is "two hundred eleven billion, one hundred twenty-one million, one hundred thousand, one hundred one".