2123013313212 has 144 divisors (see below), whose sum is σ = 5657570513280. Its totient is φ = 618414177920.

The previous prime is 2123013313159. The next prime is 2123013313243. The reversal of 2123013313212 is 2123133103212.

It is a super-2 number, since 2×2123013313212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9447463 + ... + 9669569.

It is an arithmetic number, because the mean of its divisors is an integer number (39288684120).

Almost surely, 2^{2123013313212} is an apocalyptic number.

2123013313212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123013313212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2828785256640).

2123013313212 is an abundant number, since it is smaller than the sum of its proper divisors (3534557200068).

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

2123013313212 is a wasteful number, since it uses less digits than its factorization.

2123013313212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222392 (or 222379 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 2123013313212 its reverse (2123133103212), we get a palindrome (4246146416424).

The spelling of 2123013313212 in words is "two trillion, one hundred twenty-three billion, thirteen million, three hundred thirteen thousand, two hundred twelve".