212111321101 has 4 divisors (see below), whose sum is σ = 212689281472. Its totient is φ = 211533360732.

The previous prime is 212111321099. The next prime is 212111321159. The reversal of 212111321101 is 101123111212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212111321101 - 2¹ = 212111321099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111324101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288979635 + ... + 288980368.

It is an arithmetic number, because the mean of its divisors is an integer number (53172320368).

Almost surely, 2^212111321101 is an apocalyptic number.

It is an amenable number.

212111321101 is a deficient number, since it is larger than the sum of its proper divisors (577960371).

212111321101 is an equidigital number, since it uses as much as digits as its factorization.

212111321101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577960370.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 212111321101 its reverse (101123111212), we get a palindrome (313234432313).

The spelling of 212111321101 in words is "two hundred twelve billion, one hundred eleven million, three hundred twenty-one thousand, one hundred one".