221140000187 has 2 divisors, whose sum is σ = 221140000188. Its totient is φ = 221140000186.

The previous prime is 221140000141. The next prime is 221140000247. The reversal of 221140000187 is 781000041122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221140000187 is a prime.

It is not a weakly prime, because it can be changed into another prime (221140005187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110570000093 + 110570000094.

It is an arithmetic number, because the mean of its divisors is an integer number (110570000094).

Almost surely, 2^221140000187 is an apocalyptic number.

221140000187 is a deficient number, since it is larger than the sum of its proper divisors (1).

221140000187 is an equidigital number, since it uses as much as digits as its factorization.

221140000187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The spelling of 221140000187 in words is "two hundred twenty-one billion, one hundred forty million, one hundred eighty-seven", and thus it is an aban number.