1243233334421 has 32 divisors (see below), whose sum is σ = 1424988609408. Its totient is φ = 1074487357440.

The previous prime is 1243233334417. The next prime is 1243233334471. The reversal of 1243233334421 is 1244333323421.

It is a cyclic number.

It is not a de Polignac number, because 1243233334421 - 2² = 1243233334417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243233334471) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 135085406 + ... + 135094608.

It is an arithmetic number, because the mean of its divisors is an integer number (44530894044).

Almost surely, 2^{1243233334421} is an apocalyptic number.

It is an amenable number.

1243233334421 is a deficient number, since it is larger than the sum of its proper divisors (181755274987).

1243233334421 is a wasteful number, since it uses less digits than its factorization.

1243233334421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341.

The product of its digits is 124416, while the sum is 35.

Adding to 1243233334421 its reverse (1244333323421), we get a palindrome (2487566657842).

The spelling of 1243233334421 in words is "one trillion, two hundred forty-three billion, two hundred thirty-three million, three hundred thirty-four thousand, four hundred twenty-one".