221495049 has 12 divisors (see below), whose sum is σ = 320072896. Its totient is φ = 147600792.

The previous prime is 221495047. The next prime is 221495051. The reversal of 221495049 is 940594122.

221495049 is a `hidden beast` number, since 2 + 2 + 149 + 504 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (221495047) and next prime (221495051).

It is not a de Polignac number, because 221495049 - 2¹ = 221495047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221495041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29052 + ... + 35874.

Almost surely, 2^221495049 is an apocalyptic number.

It is an amenable number.

221495049 is a deficient number, since it is larger than the sum of its proper divisors (98577847).

221495049 is a wasteful number, since it uses less digits than its factorization.

221495049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10436 (or 10433 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 221495049 is about 14882.7097331098. The cubic root of 221495049 is about 605.0454616021.

The spelling of 221495049 in words is "two hundred twenty-one million, four hundred ninety-five thousand, forty-nine".