1001221221053 has 2 divisors, whose sum is σ = 1001221221054. Its totient is φ = 1001221221052.

The previous prime is 1001221221047. The next prime is 1001221221059. The reversal of 1001221221053 is 3501221221001.

It is a balanced prime because it is at equal distance from previous prime (1001221221047) and next prime (1001221221059).

It can be written as a sum of positive squares in only one way, i.e., 525620650009 + 475600571044 = 724997^2 + 689638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001221221053 - 2¹⁰ = 1001221220029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001221221059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500610610526 + 500610610527.

It is an arithmetic number, because the mean of its divisors is an integer number (500610610527).

Almost surely, 2^{1001221221053} is an apocalyptic number.

It is an amenable number.

1001221221053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001221221053 is an equidigital number, since it uses as much as digits as its factorization.

1001221221053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1001221221053 its reverse (3501221221001), we get a palindrome (4502442442054).

The spelling of 1001221221053 in words is "one trillion, one billion, two hundred twenty-one million, two hundred twenty-one thousand, fifty-three".