211121200111102 has 4 divisors (see below), whose sum is σ = 316681800166656. Its totient is φ = 105560600055550.

The previous prime is 211121200111093. The next prime is 211121200111139. The reversal of 211121200111102 is 201111002121112.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×211121200111102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52780300027774 + ... + 52780300027777.

It is an arithmetic number, because the mean of its divisors is an integer number (79170450041664).

Almost surely, 2^{211121200111102} is an apocalyptic number.

211121200111102 is a deficient number, since it is larger than the sum of its proper divisors (105560600055554).

211121200111102 is a wasteful number, since it uses less digits than its factorization.

211121200111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105560600055553.

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

Adding to 211121200111102 its reverse (201111002121112), we get a palindrome (412232202232214).

The spelling of 211121200111102 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred million, one hundred eleven thousand, one hundred two".