1021320141145 has 16 divisors (see below), whose sum is σ = 1272674792592. Its totient is φ = 786208343040.

The previous prime is 1021320141097. The next prime is 1021320141169. The reversal of 1021320141145 is 5411410231201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 170188426521 + 851131714624 = 412539^2 + 922568^2 .

It is not a de Polignac number, because 1021320141145 - 2²³ = 1021311752537 is a prime.

It is a super-2 number, since 2×1021320141145² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34108662 + ... + 34138591.

It is an arithmetic number, because the mean of its divisors is an integer number (79542174537).

Almost surely, 2^{1021320141145} is an apocalyptic number.

It is an amenable number.

1021320141145 is a deficient number, since it is larger than the sum of its proper divisors (251354651447).

1021320141145 is an equidigital number, since it uses as much as digits as its factorization.

1021320141145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68247372.

The product of its (nonzero) digits is 960, while the sum is 25.

Adding to 1021320141145 its reverse (5411410231201), we get a palindrome (6432730372346).

The spelling of 1021320141145 in words is "one trillion, twenty-one billion, three hundred twenty million, one hundred forty-one thousand, one hundred forty-five".