20112120102 has 16 divisors (see below), whose sum is σ = 40622501232. Its totient is φ = 6637663200.

The previous prime is 20112120101. The next prime is 20112120109. The reversal of 20112120102 is 20102121102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16593553 + ... + 16594764.

It is an arithmetic number, because the mean of its divisors is an integer number (2538906327).

Almost surely, 2^20112120102 is an apocalyptic number.

20112120102 is an abundant number, since it is smaller than the sum of its proper divisors (20510381130).

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

20112120102 is a wasteful number, since it uses less digits than its factorization.

20112120102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33188423.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20112120102 its reverse (20102121102), we get a palindrome (40214241204).

The spelling of 20112120102 in words is "twenty billion, one hundred twelve million, one hundred twenty thousand, one hundred two".