2012312021043 has 4 divisors (see below), whose sum is σ = 2683082694728. Its totient is φ = 1341541347360.

The previous prime is 2012312021021. The next prime is 2012312021053. The reversal of 2012312021043 is 3401202132102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2012312021043 - 2¹⁷ = 2012311889971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012312021053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335385336838 + ... + 335385336843.

It is an arithmetic number, because the mean of its divisors is an integer number (670770673682).

Almost surely, 2^{2012312021043} is an apocalyptic number.

2012312021043 is a deficient number, since it is larger than the sum of its proper divisors (670770673685).

2012312021043 is an equidigital number, since it uses as much as digits as its factorization.

2012312021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670770673684.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2012312021043 its reverse (3401202132102), we get a palindrome (5413514153145).

The spelling of 2012312021043 in words is "two trillion, twelve billion, three hundred twelve million, twenty-one thousand, forty-three".