212021120112 has 40 divisors (see below), whose sum is σ = 561080286480. Its totient is φ = 68949957120.

The previous prime is 212021120093. The next prime is 212021120249. The reversal of 212021120112 is 211021120212.

It is a junction number, because it is equal to n+sod(n) for n = 212021120091 and 212021120100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53865187 + ... + 53869122.

It is an arithmetic number, because the mean of its divisors is an integer number (14027007162).

Almost surely, 2^212021120112 is an apocalyptic number.

It is an amenable number.

212021120112 is an abundant number, since it is smaller than the sum of its proper divisors (349059166368).

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

212021120112 is a wasteful number, since it uses less digits than its factorization.

212021120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107734361 (or 107734355 counting only the distinct ones).

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

Adding to 212021120112 its reverse (211021120212), we get a palindrome (423042240324).

The spelling of 212021120112 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, one hundred twelve".