212012200122111 has 24 divisors (see below), whose sum is σ = 313884660804624. Its totient is φ = 137816948327040.

The previous prime is 212012200122053. The next prime is 212012200122113. The reversal of 212012200122111 is 111221002210212.

212012200122111 is a `hidden beast` number, since 21 + 201 + 220 + 0 + 1 + 221 + 1 + 1 = 666.

It is not a de Polignac number, because 212012200122111 - 2¹⁰ = 212012200121087 is a prime.

It is a super-2 number, since 2×212012200122111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012200122113) 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, 160101316 + ... + 161420121.

It is an arithmetic number, because the mean of its divisors is an integer number (13078527533526).

Almost surely, 2^{212012200122111} is an apocalyptic number.

212012200122111 is a deficient number, since it is larger than the sum of its proper divisors (101872460682513).

212012200122111 is a wasteful number, since it uses less digits than its factorization.

212012200122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321523271 (or 321523268 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212012200122111 its reverse (111221002210212), we get a palindrome (323233202332323).

The spelling of 212012200122111 in words is "two hundred twelve trillion, twelve billion, two hundred million, one hundred twenty-two thousand, one hundred eleven".