20102122112 has 64 divisors (see below), whose sum is σ = 41749171200. Its totient is φ = 9630336000.

The previous prime is 20102122099. The next prime is 20102122121. The reversal of 20102122112 is 21122120102.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375689 + ... + 425847.

It is an arithmetic number, because the mean of its divisors is an integer number (652330800).

Almost surely, 2^20102122112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20102122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20874585600).

20102122112 is an abundant number, since it is smaller than the sum of its proper divisors (21647049088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20102122112 is a wasteful number, since it uses less digits than its factorization.

20102122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50305 (or 50293 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20102122112 its reverse (21122120102), we get a palindrome (41224242214).

The spelling of 20102122112 in words is "twenty billion, one hundred two million, one hundred twenty-two thousand, one hundred twelve".