1272212874243 has 12 divisors (see below), whose sum is σ = 1853903127960. Its totient is φ = 840636234816.

The previous prime is 1272212874211. The next prime is 1272212874263. The reversal of 1272212874243 is 3424782122721.

1272212874243 is a `hidden beast` number, since 1 + 2 + 7 + 2 + 212 + 8 + 7 + 424 + 3 = 666.

It is not a de Polignac number, because 1272212874243 - 2⁵ = 1272212874211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272212874263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 625472373 + ... + 625474406.

It is an arithmetic number, because the mean of its divisors is an integer number (154491927330).

Almost surely, 2^{1272212874243} is an apocalyptic number.

1272212874243 is a deficient number, since it is larger than the sum of its proper divisors (581690253717).

1272212874243 is a wasteful number, since it uses less digits than its factorization.

1272212874243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250946898 (or 1250946895 counting only the distinct ones).

The product of its digits is 602112, while the sum is 45.

Adding to 1272212874243 its reverse (3424782122721), we get a palindrome (4696994996964).

The spelling of 1272212874243 in words is "one trillion, two hundred seventy-two billion, two hundred twelve million, eight hundred seventy-four thousand, two hundred forty-three".