11021011201987 has 2 divisors, whose sum is σ = 11021011201988. Its totient is φ = 11021011201986.

The previous prime is 11021011201951. The next prime is 11021011202009. The reversal of 11021011201987 is 78910211012011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021011201987 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021011201787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510505600993 + 5510505600994.

It is an arithmetic number, because the mean of its divisors is an integer number (5510505600994).

Almost surely, 2^{11021011201987} is an apocalyptic number.

11021011201987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021011201987 is an equidigital number, since it uses as much as digits as its factorization.

11021011201987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 34.

Adding to 11021011201987 its reverse (78910211012011), we get a palindrome (89931222213998).

The spelling of 11021011201987 in words is "eleven trillion, twenty-one billion, eleven million, two hundred one thousand, nine hundred eighty-seven".