212330021111 has 8 divisors (see below), whose sum is σ = 240697999920. Its totient is φ = 185681313792.

The previous prime is 212330021023. The next prime is 212330021119. The reversal of 212330021111 is 111120033212.

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

It is not a de Polignac number, because 212330021111 - 2¹⁸ = 212329758967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212330021111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212330021119) 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, 429817610 + ... + 429818103.

It is an arithmetic number, because the mean of its divisors is an integer number (30087249990).

Almost surely, 2^212330021111 is an apocalyptic number.

212330021111 is a deficient number, since it is larger than the sum of its proper divisors (28367978809).

212330021111 is a wasteful number, since it uses less digits than its factorization.

212330021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859635745.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 212330021111 its reverse (111120033212), we get a palindrome (323450054323).

The spelling of 212330021111 in words is "two hundred twelve billion, three hundred thirty million, twenty-one thousand, one hundred eleven".