20212322111 has 4 divisors (see below), whose sum is σ = 20408558352. Its totient is φ = 20016085872.

The previous prime is 20212322107. The next prime is 20212322131. The reversal of 20212322111 is 11122321202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20212322111 - 2² = 20212322107 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 20212322111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212322131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98117966 + ... + 98118171.

It is an arithmetic number, because the mean of its divisors is an integer number (5102139588).

Almost surely, 2^20212322111 is an apocalyptic number.

20212322111 is a deficient number, since it is larger than the sum of its proper divisors (196236241).

20212322111 is a wasteful number, since it uses less digits than its factorization.

20212322111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196236240.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20212322111 its reverse (11122321202), we get a palindrome (31334643313).

Subtracting from 20212322111 its reverse (11122321202), we obtain a palindrome (9090000909).

The spelling of 20212322111 in words is "twenty billion, two hundred twelve million, three hundred twenty-two thousand, one hundred eleven".