2121210200111 has 8 divisors (see below), whose sum is σ = 2153059496064. Its totient is φ = 2089366476120.

The previous prime is 2121210200041. The next prime is 2121210200171. The reversal of 2121210200111 is 1110020121212.

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 2121210200111 - 2²⁶ = 2121143091247 is a prime.

It is a super-3 number, since 3×2121210200111³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121210200171) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 622715 + ... + 2151788.

It is an arithmetic number, because the mean of its divisors is an integer number (269132437008).

Almost surely, 2^{2121210200111} is an apocalyptic number.

2121210200111 is a deficient number, since it is larger than the sum of its proper divisors (31849295953).

2121210200111 is a wasteful number, since it uses less digits than its factorization.

2121210200111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785981.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121210200111 its reverse (1110020121212), we get a palindrome (3231230321323).

The spelling of 2121210200111 in words is "two trillion, one hundred twenty-one billion, two hundred ten million, two hundred thousand, one hundred eleven".