1212020111212 has 6 divisors (see below), whose sum is σ = 2121035194628. Its totient is φ = 606010055604.

The previous prime is 1212020111209. The next prime is 1212020111219. The reversal of 1212020111212 is 2121110202121.

It is not an unprimeable number, because it can be changed into a prime (1212020111219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151502513898 + ... + 151502513905.

Almost surely, 2^{1212020111212} is an apocalyptic number.

It is an amenable number.

1212020111212 is a deficient number, since it is larger than the sum of its proper divisors (909015083416).

1212020111212 is a wasteful number, since it uses less digits than its factorization.

1212020111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303005027807 (or 303005027805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212020111212 its reverse (2121110202121), we get a palindrome (3333130313333).

Subtracting 1212020111212 from its reverse (2121110202121), we obtain a palindrome (909090090909).

The spelling of 1212020111212 in words is "one trillion, two hundred twelve billion, twenty million, one hundred eleven thousand, two hundred twelve".