1243244234121 has 16 divisors (see below), whose sum is σ = 1748240567040. Its totient is φ = 783705514320.

The previous prime is 1243244234119. The next prime is 1243244234143. The reversal of 1243244234121 is 1214324423421.

It is not a de Polignac number, because 1243244234121 - 2¹ = 1243244234119 is a prime.

It is a super-2 number, since 2×1243244234121² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1243244234161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20822295 + ... + 20881916.

It is an arithmetic number, because the mean of its divisors is an integer number (109265035440).

Almost surely, 2^{1243244234121} is an apocalyptic number.

It is an amenable number.

1243244234121 is a deficient number, since it is larger than the sum of its proper divisors (504996332919).

1243244234121 is a wasteful number, since it uses less digits than its factorization.

1243244234121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41704756.

The product of its digits is 36864, while the sum is 33.

Adding to 1243244234121 its reverse (1214324423421), we get a palindrome (2457568657542).

The spelling of 1243244234121 in words is "one trillion, two hundred forty-three billion, two hundred forty-four million, two hundred thirty-four thousand, one hundred twenty-one".