1044010121221 has 2 divisors, whose sum is σ = 1044010121222. Its totient is φ = 1044010121220.

The previous prime is 1044010121197. The next prime is 1044010121317. The reversal of 1044010121221 is 1221210104401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 989925502500 + 54084618721 = 994950^2 + 232561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1044010121221 - 2¹⁹ = 1044009596933 is a prime.

It is a super-2 number, since 2×1044010121221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044010121521) 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 as a sum of consecutive naturals, namely, 522005060610 + 522005060611.

It is an arithmetic number, because the mean of its divisors is an integer number (522005060611).

Almost surely, 2^{1044010121221} is an apocalyptic number.

It is an amenable number.

1044010121221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044010121221 is an equidigital number, since it uses as much as digits as its factorization.

1044010121221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1044010121221 its reverse (1221210104401), we get a palindrome (2265220225622).

The spelling of 1044010121221 in words is "one trillion, forty-four billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".