212112021011 has 8 divisors (see below), whose sum is σ = 231398940864. Its totient is φ = 192825769320.

The previous prime is 212112020987. The next prime is 212112021013. The reversal of 212112021011 is 110120211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212112021011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212112021013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686300 + ... + 946166.

It is an arithmetic number, because the mean of its divisors is an integer number (28924867608).

Almost surely, 2^212112021011 is an apocalyptic number.

212112021011 is a deficient number, since it is larger than the sum of its proper divisors (19286919853).

212112021011 is a wasteful number, since it uses less digits than its factorization.

212112021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334081.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212112021011 its reverse (110120211212), we get a palindrome (322232232223).

The spelling of 212112021011 in words is "two hundred twelve billion, one hundred twelve million, twenty-one thousand, eleven".