212211021012 has 48 divisors (see below), whose sum is σ = 524857011840. Its totient is φ = 66503503872.

The previous prime is 212211021007. The next prime is 212211021019. The reversal of 212211021012 is 210120112212.

It is a junction number, because it is equal to n+sod(n) for n = 212211020982 and 212211021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212211021019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 378493 + ... + 753444.

It is an arithmetic number, because the mean of its divisors is an integer number (10934521080).

Almost surely, 2^212211021012 is an apocalyptic number.

It is an amenable number.

212211021012 is an abundant number, since it is smaller than the sum of its proper divisors (312645990828).

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

212211021012 is a wasteful number, since it uses less digits than its factorization.

212211021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132880 (or 1132878 counting only the distinct ones).

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

Adding to 212211021012 its reverse (210120112212), we get a palindrome (422331133224).

The spelling of 212211021012 in words is "two hundred twelve billion, two hundred eleven million, twenty-one thousand, twelve".