212001221112 has 16 divisors (see below), whose sum is σ = 530003052840. Its totient is φ = 70667073696.

The previous prime is 212001221111. The next prime is 212001221123. The reversal of 212001221112 is 211122100212.

212001221112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212001221112² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212001221091 and 212001221100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212001221111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4416692083 + ... + 4416692130.

Almost surely, 2^212001221112 is an apocalyptic number.

It is an amenable number.

212001221112 is an abundant number, since it is smaller than the sum of its proper divisors (318001831728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212001221112 is a wasteful number, since it uses less digits than its factorization.

212001221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8833384222 (or 8833384218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212001221112 its reverse (211122100212), we get a palindrome (423123321324).

The spelling of 212001221112 in words is "two hundred twelve billion, one million, two hundred twenty-one thousand, one hundred twelve".