212102002021111 has 16 divisors (see below), whose sum is σ = 244550189167200. Its totient is φ = 182597474562048.

The previous prime is 212102002021103. The next prime is 212102002021121. The reversal of 212102002021111 is 111120200201212.

It is a cyclic number.

It is not a de Polignac number, because 212102002021111 - 2³ = 212102002021103 is a prime.

It is a super-3 number, since 3×212102002021111³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212102002021121) 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, 11321758650 + ... + 11321777383.

It is an arithmetic number, because the mean of its divisors is an integer number (15284386822950).

Almost surely, 2^{212102002021111} is an apocalyptic number.

212102002021111 is a deficient number, since it is larger than the sum of its proper divisors (32448187146089).

212102002021111 is a wasteful number, since it uses less digits than its factorization.

212102002021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22643536098.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212102002021111 its reverse (111120200201212), we get a palindrome (323222202222323).

The spelling of 212102002021111 in words is "two hundred twelve trillion, one hundred two billion, two million, twenty-one thousand, one hundred eleven".