87707222321 has 2 divisors, whose sum is σ = 87707222322. Its totient is φ = 87707222320.

The previous prime is 87707222257. The next prime is 87707222357. The reversal of 87707222321 is 12322270778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81133255921 + 6573966400 = 284839^2 + 81080^2 .

It is a cyclic number.

It is not a de Polignac number, because 87707222321 - 2⁶ = 87707222257 is a prime.

It is not a weakly prime, because it can be changed into another prime (87707222371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43853611160 + 43853611161.

It is an arithmetic number, because the mean of its divisors is an integer number (43853611161).

Almost surely, 2^87707222321 is an apocalyptic number.

It is an amenable number.

87707222321 is a deficient number, since it is larger than the sum of its proper divisors (1).

87707222321 is an equidigital number, since it uses as much as digits as its factorization.

87707222321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131712, while the sum is 41.

The spelling of 87707222321 in words is "eighty-seven billion, seven hundred seven million, two hundred twenty-two thousand, three hundred twenty-one".