212021212112 has 10 divisors (see below), whose sum is σ = 410791098498. Its totient is φ = 106010606048.

The previous prime is 212021212061. The next prime is 212021212121. The reversal of 212021212112 is 211212120212.

It can be written as a sum of positive squares in only one way, i.e., 211824539536 + 196672576 = 460244^2 + 14024^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6625662863 + ... + 6625662894.

Almost surely, 2^212021212112 is an apocalyptic number.

It is an amenable number.

212021212112 is a deficient number, since it is larger than the sum of its proper divisors (198769886386).

212021212112 is a wasteful number, since it uses less digits than its factorization.

212021212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13251325765 (or 13251325759 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212021212112 its reverse (211212120212), we get a palindrome (423233332324).

The spelling of 212021212112 in words is "two hundred twelve billion, twenty-one million, two hundred twelve thousand, one hundred twelve".