1021244015105 has 16 divisors (see below), whose sum is σ = 1246621320000. Its totient is φ = 802917487680.

The previous prime is 1021244015083. The next prime is 1021244015107. The reversal of 1021244015105 is 5015104421201.

It is a happy number.

It is not a de Polignac number, because 1021244015105 - 2¹⁴ = 1021243998721 is a prime.

It is a super-2 number, since 2×1021244015105² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021244015107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 537515 + ... + 1526895.

It is an arithmetic number, because the mean of its divisors is an integer number (77913832500).

Almost surely, 2^{1021244015105} is an apocalyptic number.

It is an amenable number.

1021244015105 is a deficient number, since it is larger than the sum of its proper divisors (225377304895).

1021244015105 is an equidigital number, since it uses as much as digits as its factorization.

1021244015105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992944.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 1021244015105 its reverse (5015104421201), we get a palindrome (6036348436306).

The spelling of 1021244015105 in words is "one trillion, twenty-one billion, two hundred forty-four million, fifteen thousand, one hundred five".