211100110022121 has 24 divisors (see below), whose sum is σ = 299003982281760. Its totient is φ = 132452151793152.

The previous prime is 211100110022077. The next prime is 211100110022203. The reversal of 211100110022121 is 121220011001112.

It is a happy number.

It is not a de Polignac number, because 211100110022121 - 2¹¹ = 211100110020073 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211100110022121.

It is not an unprimeable number, because it can be changed into a prime (211100110024121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38543070 + ... + 43678008.

It is an arithmetic number, because the mean of its divisors is an integer number (12458499261740).

Almost surely, 2^{211100110022121} is an apocalyptic number.

It is an amenable number.

211100110022121 is a deficient number, since it is larger than the sum of its proper divisors (87903872259639).

211100110022121 is a wasteful number, since it uses less digits than its factorization.

211100110022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5182393 (or 5182376 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211100110022121 its reverse (121220011001112), we get a palindrome (332320121023233).

The spelling of 211100110022121 in words is "two hundred eleven trillion, one hundred billion, one hundred ten million, twenty-two thousand, one hundred twenty-one".