2012121343 has 16 divisors (see below), whose sum is σ = 2156553504. Its totient is φ = 1870663680.

The previous prime is 2012121323. The next prime is 2012121367. The reversal of 2012121343 is 3431212102.

It is a happy number.

It is not a de Polignac number, because 2012121343 - 2⁵ = 2012121311 is a prime.

It is a super-2 number, since 2×2012121343² = 8097264597912247298, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 2012121343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012121313) 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, 1313488 + ... + 1315018.

It is an arithmetic number, because the mean of its divisors is an integer number (134784594).

Almost surely, 2^2012121343 is an apocalyptic number.

2012121343 is a deficient number, since it is larger than the sum of its proper divisors (144432161).

2012121343 is a wasteful number, since it uses less digits than its factorization.

2012121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2012121343 is about 44856.6755678572. The cubic root of 2012121343 is about 1262.4612475508.

Adding to 2012121343 its reverse (3431212102), we get a palindrome (5443333445).

The spelling of 2012121343 in words is "two billion, twelve million, one hundred twenty-one thousand, three hundred forty-three".