20112122102111 has 8 divisors (see below), whose sum is σ = 21659453568144. Its totient is φ = 18564825657600.

The previous prime is 20112122102089. The next prime is 20112122102129. The reversal of 20112122102111 is 11120122121102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20112122102111 - 2¹⁸ = 20112121839967 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 20112122102111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112122102011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7556561 + ... + 9865386.

It is an arithmetic number, because the mean of its divisors is an integer number (2707431696018).

Almost surely, 2^{20112122102111} is an apocalyptic number.

20112122102111 is a deficient number, since it is larger than the sum of its proper divisors (1547331466033).

20112122102111 is a wasteful number, since it uses less digits than its factorization.

20112122102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17510761.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 20112122102111 its reverse (11120122121102), we get a palindrome (31232244223213).

The spelling of 20112122102111 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-two million, one hundred two thousand, one hundred eleven".