20212122202111 has 32 divisors (see below), whose sum is σ = 23822308224000. Its totient is φ = 17140273547040.

The previous prime is 20212122202109. The next prime is 20212122202243. The reversal of 20212122202111 is 11120222121202.

It is not a de Polignac number, because 20212122202111 - 2¹ = 20212122202109 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 (20212122202411) 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 31 ways as a sum of consecutive naturals, for example, 37214460 + ... + 37753678.

It is an arithmetic number, because the mean of its divisors is an integer number (744447132000).

Almost surely, 2^{20212122202111} is an apocalyptic number.

20212122202111 is a deficient number, since it is larger than the sum of its proper divisors (3610186021889).

20212122202111 is a wasteful number, since it uses less digits than its factorization.

20212122202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540404 (or 540390 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20212122202111 its reverse (11120222121202), we get a palindrome (31332344323313).

The spelling of 20212122202111 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred two thousand, one hundred eleven".