211110022111121 has 16 divisors (see below), whose sum is σ = 251766894720000. Its totient is φ = 173078246447568.

The previous prime is 211110022111067. The next prime is 211110022111187. The reversal of 211110022111121 is 121111220011112.

It is not a de Polignac number, because 211110022111121 - 2¹⁴ = 211110022094737 is a prime.

It is a Duffinian number.

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 211110022111121.

It is not an unprimeable number, because it can be changed into a prime (211110022131121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16900871 + ... + 26605628.

It is an arithmetic number, because the mean of its divisors is an integer number (15735430920000).

Almost surely, 2^{211110022111121} is an apocalyptic number.

It is an amenable number.

211110022111121 is a deficient number, since it is larger than the sum of its proper divisors (40656872608879).

211110022111121 is a wasteful number, since it uses less digits than its factorization.

211110022111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43536668.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211110022111121 its reverse (121111220011112), we get a palindrome (332221242122233).

The spelling of 211110022111121 in words is "two hundred eleven trillion, one hundred ten billion, twenty-two million, one hundred eleven thousand, one hundred twenty-one".