2011100121212 has 24 divisors (see below), whose sum is σ = 4331600261856. Its totient is φ = 795600047808.

The previous prime is 2011100121211. The next prime is 2011100121259. The reversal of 2011100121212 is 2121210011102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011100121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762499803 + ... + 2762500530.

It is an arithmetic number, because the mean of its divisors is an integer number (180483344244).

Almost surely, 2^{2011100121212} is an apocalyptic number.

It is an amenable number.

2011100121212 is an abundant number, since it is smaller than the sum of its proper divisors (2320500140644).

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

2011100121212 is a wasteful number, since it uses less digits than its factorization.

2011100121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5525000357 (or 5525000355 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2011100121212 its reverse (2121210011102), we get a palindrome (4132310132314).

It can be divided in two parts, 2011100 and 121212, that added together give a palindrome (2132312).

The spelling of 2011100121212 in words is "two trillion, eleven billion, one hundred million, one hundred twenty-one thousand, two hundred twelve".