11020313221987 has 4 divisors (see below), whose sum is σ = 11021144392440. Its totient is φ = 11019482051536.

The previous prime is 11020313221961. The next prime is 11020313221991. The reversal of 11020313221987 is 78912231302011.

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

It is a cyclic number.

It is not a de Polignac number, because 11020313221987 - 2²³ = 11020304833379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020313221937) 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, 415565338 + ... + 415591855.

It is an arithmetic number, because the mean of its divisors is an integer number (2755286098110).

Almost surely, 2^{11020313221987} is an apocalyptic number.

11020313221987 is a deficient number, since it is larger than the sum of its proper divisors (831170453).

11020313221987 is an equidigital number, since it uses as much as digits as its factorization.

11020313221987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831170452.

The product of its (nonzero) digits is 36288, while the sum is 40.

Adding to 11020313221987 its reverse (78912231302011), we get a palindrome (89932544523998).

The spelling of 11020313221987 in words is "eleven trillion, twenty billion, three hundred thirteen million, two hundred twenty-one thousand, nine hundred eighty-seven".