1243421222141 has 12 divisors (see below), whose sum is σ = 1509316977312. Its totient is φ = 1019450938968.

The previous prime is 1243421222137. The next prime is 1243421222159. The reversal of 1243421222141 is 1412221243421.

It is not a de Polignac number, because 1243421222141 - 2² = 1243421222137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243421722141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551649815 + ... + 551652068.

It is an arithmetic number, because the mean of its divisors is an integer number (125776414776).

Almost surely, 2^{1243421222141} is an apocalyptic number.

It is an amenable number.

1243421222141 is a deficient number, since it is larger than the sum of its proper divisors (265895755171).

1243421222141 is a wasteful number, since it uses less digits than its factorization.

1243421222141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103301920 (or 1103301913 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

Adding to 1243421222141 its reverse (1412221243421), we get a palindrome (2655642465562).

The spelling of 1243421222141 in words is "one trillion, two hundred forty-three billion, four hundred twenty-one million, two hundred twenty-two thousand, one hundred forty-one".