20020100987 has 2 divisors, whose sum is σ = 20020100988. Its totient is φ = 20020100986.

The previous prime is 20020100957. The next prime is 20020100999. The reversal of 20020100987 is 78900102002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020100987 - 2²² = 20015906683 is a prime.

It is not a weakly prime, because it can be changed into another prime (20020100957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010050493 + 10010050494.

It is an arithmetic number, because the mean of its divisors is an integer number (10010050494).

Almost surely, 2^20020100987 is an apocalyptic number.

20020100987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020100987 is an equidigital number, since it uses as much as digits as its factorization.

20020100987 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 29.

Adding to 20020100987 its reverse (78900102002), we get a palindrome (98920202989).

The spelling of 20020100987 in words is "twenty billion, twenty million, one hundred thousand, nine hundred eighty-seven".