1024220242421 has 2 divisors, whose sum is σ = 1024220242422. Its totient is φ = 1024220242420.

The previous prime is 1024220242417. The next prime is 1024220242453. The reversal of 1024220242421 is 1242420224201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 876771922321 + 147448320100 = 936361^2 + 383990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1024220242421 - 2² = 1024220242417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1024220242121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512110121210 + 512110121211.

It is an arithmetic number, because the mean of its divisors is an integer number (512110121211).

Almost surely, 2^{1024220242421} is an apocalyptic number.

It is an amenable number.

1024220242421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024220242421 is an equidigital number, since it uses as much as digits as its factorization.

1024220242421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 1024220242421 its reverse (1242420224201), we get a palindrome (2266640466622).

The spelling of 1024220242421 in words is "one trillion, twenty-four billion, two hundred twenty million, two hundred forty-two thousand, four hundred twenty-one".