887758461221 has 2 divisors, whose sum is σ = 887758461222. Its totient is φ = 887758461220.

The previous prime is 887758461209. The next prime is 887758461301. The reversal of 887758461221 is 122164857788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 511761390625 + 375997070596 = 715375^2 + 613186^2 .

It is a cyclic number.

It is not a de Polignac number, because 887758461221 - 2¹⁸ = 887758199077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (887758401221) 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, 443879230610 + 443879230611.

It is an arithmetic number, because the mean of its divisors is an integer number (443879230611).

Almost surely, 2^887758461221 is an apocalyptic number.

It is an amenable number.

887758461221 is a deficient number, since it is larger than the sum of its proper divisors (1).

887758461221 is an equidigital number, since it uses as much as digits as its factorization.

887758461221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12042240, while the sum is 59.

The spelling of 887758461221 in words is "eight hundred eighty-seven billion, seven hundred fifty-eight million, four hundred sixty-one thousand, two hundred twenty-one".