221223048187 has 2 divisors, whose sum is σ = 221223048188. Its totient is φ = 221223048186.

The previous prime is 221223048169. The next prime is 221223048197. The reversal of 221223048187 is 781840322122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221223048187 is a prime.

It is not a weakly prime, because it can be changed into another prime (221223048197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110611524093 + 110611524094.

It is an arithmetic number, because the mean of its divisors is an integer number (110611524094).

Almost surely, 2^221223048187 is an apocalyptic number.

221223048187 is a deficient number, since it is larger than the sum of its proper divisors (1).

221223048187 is an equidigital number, since it uses as much as digits as its factorization.

221223048187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The spelling of 221223048187 in words is "two hundred twenty-one billion, two hundred twenty-three million, forty-eight thousand, one hundred eighty-seven".