1243322233421 has 4 divisors (see below), whose sum is σ = 1243332169344. Its totient is φ = 1243312297500.

The previous prime is 1243322233411. The next prime is 1243322233429.

1243322233421 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1243322233421 - 2²⁶ = 1243255124557 is a prime.

It is a super-3 number, since 3×1243322233421³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243322233429) 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, 4777835 + ... + 5031336.

It is an arithmetic number, because the mean of its divisors is an integer number (310833042336).

Almost surely, 2^{1243322233421} is an apocalyptic number.

It is an amenable number.

1243322233421 is a deficient number, since it is larger than the sum of its proper divisors (9935923).

1243322233421 is an equidigital number, since it uses as much as digits as its factorization.

1243322233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935922.

The product of its digits is 41472, while the sum is 32.

The spelling of 1243322233421 in words is "one trillion, two hundred forty-three billion, three hundred twenty-two million, two hundred thirty-three thousand, four hundred twenty-one".