20122212111 has 16 divisors (see below), whose sum is σ = 26872710144. Its totient is φ = 13393283904.

The previous prime is 20122212079. The next prime is 20122212151. The reversal of 20122212111 is 11121222102.

It is not a de Polignac number, because 20122212111 - 2⁵ = 20122212079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122212151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9415035 + ... + 9417171.

It is an arithmetic number, because the mean of its divisors is an integer number (1679544384).

Almost surely, 2^20122212111 is an apocalyptic number.

20122212111 is a deficient number, since it is larger than the sum of its proper divisors (6750498033).

20122212111 is a wasteful number, since it uses less digits than its factorization.

20122212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20122212111 its reverse (11121222102), we get a palindrome (31243434213).

Subtracting from 20122212111 its reverse (11121222102), we obtain a palindrome (9000990009).

The spelling of 20122212111 in words is "twenty billion, one hundred twenty-two million, two hundred twelve thousand, one hundred eleven".