212021112111 has 8 divisors (see below), whose sum is σ = 282697693104. Its totient is φ = 141345969600.

The previous prime is 212021112109. The next prime is 212021112133. The reversal of 212021112111 is 111211120212.

It is a happy number.

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

It is not a de Polignac number, because 212021112111 - 2¹ = 212021112109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021114111) 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, 51411 + ... + 653211.

It is an arithmetic number, because the mean of its divisors is an integer number (35337211638).

Almost surely, 2^212021112111 is an apocalyptic number.

212021112111 is a deficient number, since it is larger than the sum of its proper divisors (70676580993).

212021112111 is a wasteful number, since it uses less digits than its factorization.

212021112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719241.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 212021112111 its reverse (111211120212), we get a palindrome (323232232323).

The spelling of 212021112111 in words is "two hundred twelve billion, twenty-one million, one hundred twelve thousand, one hundred eleven".