11021202121987 has 2 divisors, whose sum is σ = 11021202121988. Its totient is φ = 11021202121986.

The previous prime is 11021202121921. The next prime is 11021202122027. The reversal of 11021202121987 is 78912120212011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11021202121987 - 2⁷ = 11021202121859 is a prime.

It is not a weakly prime, because it can be changed into another prime (11021202124987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510601060993 + 5510601060994.

It is an arithmetic number, because the mean of its divisors is an integer number (5510601060994).

Almost surely, 2^{11021202121987} is an apocalyptic number.

11021202121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021202121987 is an equidigital number, since it uses as much as digits as its factorization.

11021202121987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 37.

Adding to 11021202121987 its reverse (78912120212011), we get a palindrome (89933322333998).

The spelling of 11021202121987 in words is "eleven trillion, twenty-one billion, two hundred two million, one hundred twenty-one thousand, nine hundred eighty-seven".