20211001000087 has 2 divisors, whose sum is σ = 20211001000088. Its totient is φ = 20211001000086.

The previous prime is 20211000999989. The next prime is 20211001000097. The reversal of 20211001000087 is 78000010011202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211001000087 is a prime.

It is a super-2 number, since 2×20211001000087² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20211001000097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105500500043 + 10105500500044.

It is an arithmetic number, because the mean of its divisors is an integer number (10105500500044).

Almost surely, 2^{20211001000087} is an apocalyptic number.

20211001000087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211001000087 is an equidigital number, since it uses as much as digits as its factorization.

20211001000087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 20211001000087 its reverse (78000010011202), we get a palindrome (98211011011289).

The spelling of 20211001000087 in words is "twenty trillion, two hundred eleven billion, one million, eighty-seven", and thus it is an aban number.