12011122020212 has 18 divisors (see below), whose sum is σ = 24451212684402. Its totient is φ = 5147623722864.

The previous prime is 12011122020211. The next prime is 12011122020217. The reversal of 12011122020212 is 21202022111021.

It can be written as a sum of positive squares in only one way, i.e., 9272110260196 + 2739011760016 = 3045014^2 + 1654996^2 .

It is a super-2 number, since 2×12011122020212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011122020211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30640617203 + ... + 30640617594.

It is an arithmetic number, because the mean of its divisors is an integer number (1358400704689).

Almost surely, 2^{12011122020212} is an apocalyptic number.

It is an amenable number.

12011122020212 is an abundant number, since it is smaller than the sum of its proper divisors (12440090664190).

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

12011122020212 is a wasteful number, since it uses less digits than its factorization.

12011122020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61281234815 (or 61281234806 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12011122020212 its reverse (21202022111021), we get a palindrome (33213144131233).

The spelling of 12011122020212 in words is "twelve trillion, eleven billion, one hundred twenty-two million, twenty thousand, two hundred twelve".