20212122210111 has 32 divisors (see below), whose sum is σ = 32247789880320. Its totient is φ = 12438024865632.

The previous prime is 20212122210001. The next prime is 20212122210121. The reversal of 20212122210111 is 11101222121202.

20212122210111 is a `hidden beast` number, since 202 + 121 + 22 + 210 + 111 = 666.

It is not a de Polignac number, because 20212122210111 - 2⁹ = 20212122209599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212122210121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22531966 + ... + 23411828.

It is an arithmetic number, because the mean of its divisors is an integer number (1007743433760).

Almost surely, 2^{20212122210111} is an apocalyptic number.

20212122210111 is a deficient number, since it is larger than the sum of its proper divisors (12035667670209).

20212122210111 is a wasteful number, since it uses less digits than its factorization.

20212122210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945332 (or 945326 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 20212122210111 its reverse (11101222121202), we get a palindrome (31313344331313).

The spelling of 20212122210111 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred ten thousand, one hundred eleven".