20120002112120 has 64 divisors (see below), whose sum is σ = 46888083079200. Its totient is φ = 7761018549760.

The previous prime is 20120002112099. The next prime is 20120002112123. The reversal of 20120002112120 is 2121120002102.

It is a super-2 number, since 2×20120002112120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20120002112095 and 20120002112104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120002112123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610874 + ... + 11515593.

Almost surely, 2^{20120002112120} is an apocalyptic number.

20120002112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120002112120 is an abundant number, since it is smaller than the sum of its proper divisors (26768080967080).

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

20120002112120 is a wasteful number, since it uses less digits than its factorization.

20120002112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127328 (or 21127324 counting only the distinct ones).

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

Adding to 20120002112120 its reverse (2121120002102), we get a palindrome (22241122114222).

The spelling of 20120002112120 in words is "twenty trillion, one hundred twenty billion, two million, one hundred twelve thousand, one hundred twenty".