11001120020987 has 2 divisors, whose sum is σ = 11001120020988. Its totient is φ = 11001120020986.

The previous prime is 11001120020971. The next prime is 11001120021019. The reversal of 11001120020987 is 78902002110011.

It is an a-pointer prime, because the next prime (11001120021019) can be obtained adding 11001120020987 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11001120020987 - 2⁴ = 11001120020971 is a prime.

It is a super-2 number, since 2×11001120020987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11001120022987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500560010493 + 5500560010494.

It is an arithmetic number, because the mean of its divisors is an integer number (5500560010494).

Almost surely, 2^{11001120020987} is an apocalyptic number.

11001120020987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001120020987 is an equidigital number, since it uses as much as digits as its factorization.

11001120020987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 32.

Adding to 11001120020987 its reverse (78902002110011), we get a palindrome (89903122130998).

The spelling of 11001120020987 in words is "eleven trillion, one billion, one hundred twenty million, twenty thousand, nine hundred eighty-seven".