12011220212 has 12 divisors (see below), whose sum is σ = 21035726880.
Its totient is φ = 6001012536.
The previous prime is 12011220197. The next prime is 12011220223. The reversal of 12011220212 is 21202211021.
Adding to 12011220212 its reverse (21202211021), we get a palindrome (33213431233).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143512 + ... + 1153967.
It is an arithmetic number, because the mean of its divisors is an integer number (1752977240).
Almost surely, 212011220212 is an apocalyptic number.
It is an amenable number.
12011220212 is a deficient number, since it is larger than the sum of its proper divisors (9024506668).
12011220212 is a wasteful number, since it uses less digits than its factorization.
12011220212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2298790 (or 2298788 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 14.
The spelling of 12011220212 in words is "twelve billion, eleven million, two hundred twenty thousand, two hundred twelve".