212100121100212 has 24 divisors (see below), whose sum is σ = 374857439594400. Its totient is φ = 104998035981600.

The previous prime is 212100121100191. The next prime is 212100121100213. The reversal of 212100121100212 is 212001121001212.

It is a super-2 number, since 2×212100121100212² (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 (212100121100213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16033539 + ... + 26101237.

It is an arithmetic number, because the mean of its divisors is an integer number (15619059983100).

Almost surely, 2^{212100121100212} is an apocalyptic number.

It is an amenable number.

212100121100212 is a deficient number, since it is larger than the sum of its proper divisors (162757318494188).

212100121100212 is a wasteful number, since it uses less digits than its factorization.

212100121100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10119951 (or 10119949 counting only the distinct ones).

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

Adding to 212100121100212 its reverse (212001121001212), we get a palindrome (424101242101424).

The spelling of 212100121100212 in words is "two hundred twelve trillion, one hundred billion, one hundred twenty-one million, one hundred thousand, two hundred twelve".