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12020020212012 = 22310878263111521
BaseRepresentation
bin1010111011101010000100…
…0010001111000100101100
31120120002202212122020201020
42232322201002033010230
53033414000133241022
641321530540414140
72350263210010401
oct256724102170454
946502685566636
1012020020212012
11391473105946a
121421688547350
13692638323297
142d7ab48462a8
1515ca0583035c
hexaeea108f12c

12020020212012 has 48 divisors (see below), whose sum is σ = 28076164902912. Its totient is φ = 4002467074560.

The previous prime is 12020020211999. The next prime is 12020020212073. The reversal of 12020020212012 is 21021202002021.

It is a junction number, because it is equal to n+sod(n) for n = 12020020211982 and 12020020212000.

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, 107726812 + ... + 107838332.

It is an arithmetic number, because the mean of its divisors is an integer number (584920102144).

Almost surely, 212020020212012 is an apocalyptic number.

12020020212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12020020212012 is an abundant number, since it is smaller than the sum of its proper divisors (16056144690900).

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

12020020212012 is a wasteful number, since it uses less digits than its factorization.

12020020212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120878 (or 120876 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12020020212012 its reverse (21021202002021), we get a palindrome (33041222214033).

The spelling of 12020020212012 in words is "twelve trillion, twenty billion, twenty million, two hundred twelve thousand, twelve".