2011212111212 has 48 divisors (see below), whose sum is σ = 3668817227040. Its totient is φ = 963860889600.

The previous prime is 2011212111211. The next prime is 2011212111239. The reversal of 2011212111212 is 2121112121102.

It is a super-2 number, since 2×2011212111212² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2011212111211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15970412 + ... + 16095852.

It is an arithmetic number, because the mean of its divisors is an integer number (76433692230).

Almost surely, 2^{2011212111212} is an apocalyptic number.

It is an amenable number.

2011212111212 is a deficient number, since it is larger than the sum of its proper divisors (1657605115828).

2011212111212 is a wasteful number, since it uses less digits than its factorization.

2011212111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127202 (or 127200 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2011212111212 its reverse (2121112121102), we get a palindrome (4132324232314).

The spelling of 2011212111212 in words is "two trillion, eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred twelve".