87226820101 has 2 divisors, whose sum is σ = 87226820102. Its totient is φ = 87226820100.

The previous prime is 87226820099. The next prime is 87226820137. The reversal of 87226820101 is 10102862278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45060251076 + 42166569025 = 212274^2 + 205345^2 .

It is a cyclic number.

It is not a de Polignac number, because 87226820101 - 2¹ = 87226820099 is a prime.

Together with 87226820099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87226820141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43613410050 + 43613410051.

It is an arithmetic number, because the mean of its divisors is an integer number (43613410051).

Almost surely, 2^87226820101 is an apocalyptic number.

It is an amenable number.

87226820101 is a deficient number, since it is larger than the sum of its proper divisors (1).

87226820101 is an equidigital number, since it uses as much as digits as its factorization.

87226820101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 87226820101 in words is "eighty-seven billion, two hundred twenty-six million, eight hundred twenty thousand, one hundred one".