20112120021012 has 48 divisors (see below), whose sum is σ = 47665943592960. Its totient is φ = 6598815977952.

The previous prime is 20112120021011. The next prime is 20112120021029. The reversal of 20112120021012 is 21012002121102.

It is a junction number, because it is equal to n+sod(n) for n = 20112120020982 and 20112120021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112120021011) 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 15 ways as a sum of consecutive naturals, for example, 8750838 + ... + 10807469.

It is an arithmetic number, because the mean of its divisors is an integer number (993040491520).

Almost surely, 2^{20112120021012} is an apocalyptic number.

It is an amenable number.

20112120021012 is an abundant number, since it is smaller than the sum of its proper divisors (27553823571948).

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

20112120021012 is a wasteful number, since it uses less digits than its factorization.

20112120021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19559660 (or 19559658 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112120021012 its reverse (21012002121102), we get a palindrome (41124122142114).

The spelling of 20112120021012 in words is "twenty trillion, one hundred twelve billion, one hundred twenty million, twenty-one thousand, twelve".