21020222000087 has 2 divisors, whose sum is σ = 21020222000088. Its totient is φ = 21020222000086.

The previous prime is 21020221999993. The next prime is 21020222000119. The reversal of 21020222000087 is 78000022202012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21020222000087 - 2⁸ = 21020221999831 is a prime.

It is a super-3 number, since 3×21020222000087³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21020222005087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510111000043 + 10510111000044.

It is an arithmetic number, because the mean of its divisors is an integer number (10510111000044).

Almost surely, 2^{21020222000087} is an apocalyptic number.

21020222000087 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020222000087 is an equidigital number, since it uses as much as digits as its factorization.

21020222000087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 21020222000087 its reverse (78000022202012), we get a palindrome (99020244202099).

The spelling of 21020222000087 in words is "twenty-one trillion, twenty billion, two hundred twenty-two million, eighty-seven", and thus it is an aban number.