20112121002012 has 48 divisors (see below), whose sum is σ = 50837192585760. Its totient is φ = 6188344915584.

The previous prime is 20112121001971. The next prime is 20112121002037. The reversal of 20112121002012 is 21020012121102.

It is a super-2 number, since 2×20112121002012² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20112121001982 and 20112121002000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381405153 + ... + 381457880.

It is an arithmetic number, because the mean of its divisors is an integer number (1059108178870).

Almost surely, 2^{20112121002012} is an apocalyptic number.

It is an amenable number.

20112121002012 is an abundant number, since it is smaller than the sum of its proper divisors (30725071583748).

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

20112121002012 is a wasteful number, since it uses less digits than its factorization.

20112121002012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762863079 (or 762863051 counting only the distinct ones).

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

Adding to 20112121002012 its reverse (21020012121102), we get a palindrome (41132133123114).

The spelling of 20112121002012 in words is "twenty trillion, one hundred twelve billion, one hundred twenty-one million, two thousand, twelve".