20102020087 has 2 divisors, whose sum is σ = 20102020088. Its totient is φ = 20102020086.

The previous prime is 20102020069. The next prime is 20102020097. The reversal of 20102020087 is 78002020102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20102020087 - 2²⁷ = 19967802359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20102020097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051010043 + 10051010044.

It is an arithmetic number, because the mean of its divisors is an integer number (10051010044).

Almost surely, 2^20102020087 is an apocalyptic number.

20102020087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20102020087 is an equidigital number, since it uses as much as digits as its factorization.

20102020087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 20102020087 its reverse (78002020102), we get a palindrome (98104040189).

The spelling of 20102020087 in words is "twenty billion, one hundred two million, twenty thousand, eighty-seven".