212101111000012 has 24 divisors (see below), whose sum is σ = 400683024126000. Its totient is φ = 97659186035136.

The previous prime is 212101110999989. The next prime is 212101111000019. The reversal of 212101111000012 is 210000111101212.

It is a happy number.

It is a super-2 number, since 2×212101111000012² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 212101110999956 and 212101111000001.

It is not an unprimeable number, because it can be changed into a prime (212101111000019) 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, 4867361887 + ... + 4867405462.

It is an arithmetic number, because the mean of its divisors is an integer number (16695126005250).

Almost surely, 2^{212101111000012} is an apocalyptic number.

It is an amenable number.

212101111000012 is a deficient number, since it is larger than the sum of its proper divisors (188581913125988).

212101111000012 is a wasteful number, since it uses less digits than its factorization.

212101111000012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9734767785 (or 9734767783 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 212101111000012 its reverse (210000111101212), we get a palindrome (422101222101224).

The spelling of 212101111000012 in words is "two hundred twelve trillion, one hundred one billion, one hundred eleven million, twelve", and thus it is an aban number.