2111212012120 has 32 divisors (see below), whose sum is σ = 4771528513920. Its totient is φ = 840697873920.

The previous prime is 2111212012109. The next prime is 2111212012121. The reversal of 2111212012120 is 212102121112.

It is a junction number, because it is equal to n+sod(n) for n = 2111212012094 and 2111212012103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111212012121) 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 in 7 ways as a sum of consecutive naturals, for example, 118332561 + ... + 118350400.

It is an arithmetic number, because the mean of its divisors is an integer number (149110266060).

Almost surely, 2^{2111212012120} is an apocalyptic number.

2111212012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111212012120 is an abundant number, since it is smaller than the sum of its proper divisors (2660316501800).

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

2111212012120 is a wasteful number, since it uses less digits than its factorization.

2111212012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236683195 (or 236683191 counting only the distinct ones).

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

Adding to 2111212012120 its reverse (212102121112), we get a palindrome (2323314133232).

The spelling of 2111212012120 in words is "two trillion, one hundred eleven billion, two hundred twelve million, twelve thousand, one hundred twenty".