1162353440021 has 4 divisors (see below), whose sum is σ = 1163519292012. Its totient is φ = 1161187588032.

The previous prime is 1162353440011. The next prime is 1162353440033. The reversal of 1162353440021 is 1200443532611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1048342540996 + 114010899025 = 1023886^2 + 337655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1162353440021 - 2¹⁸ = 1162353177877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1162353440021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1162353440011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582924500 + ... + 582926493.

It is an arithmetic number, because the mean of its divisors is an integer number (290879823003).

Almost surely, 2^{1162353440021} is an apocalyptic number.

It is an amenable number.

1162353440021 is a deficient number, since it is larger than the sum of its proper divisors (1165851991).

1162353440021 is an equidigital number, since it uses as much as digits as its factorization.

1162353440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165851990.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 1162353440021 its reverse (1200443532611), we get a palindrome (2362796972632).

The spelling of 1162353440021 in words is "one trillion, one hundred sixty-two billion, three hundred fifty-three million, four hundred forty thousand, twenty-one".