1042221242421 has 12 divisors (see below), whose sum is σ = 1514445240672. Its totient is φ = 690653596776.

The previous prime is 1042221242407. The next prime is 1042221242429. The reversal of 1042221242421 is 1242421222401.

1042221242421 is a `hidden beast` number, since 1 + 0 + 4 + 2 + 2 + 212 + 424 + 21 = 666.

It is not a de Polignac number, because 1042221242421 - 2⁵ = 1042221242389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042221242429) 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, 346712151 + ... + 346715156.

It is an arithmetic number, because the mean of its divisors is an integer number (126203770056).

Almost surely, 2^{1042221242421} is an apocalyptic number.

It is an amenable number.

1042221242421 is a deficient number, since it is larger than the sum of its proper divisors (472223998251).

1042221242421 is a wasteful number, since it uses less digits than its factorization.

1042221242421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693427480 (or 693427477 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 1042221242421 its reverse (1242421222401), we get a palindrome (2284642464822).

The spelling of 1042221242421 in words is "one trillion, forty-two billion, two hundred twenty-one million, two hundred forty-two thousand, four hundred twenty-one".