221161283 has 8 divisors (see below), whose sum is σ = 252864768. Its totient is φ = 189485064.

The previous prime is 221161277. The next prime is 221161289. The reversal of 221161283 is 382161122.

It is an interprime number because it is at equal distance from previous prime (221161277) and next prime (221161289).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221161283 - 2⁴ = 221161267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221161289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15410 + ... + 26072.

It is an arithmetic number, because the mean of its divisors is an integer number (31608096).

Almost surely, 2^221161283 is an apocalyptic number.

221161283 is a deficient number, since it is larger than the sum of its proper divisors (31703485).

221161283 is a wasteful number, since it uses less digits than its factorization.

221161283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13633.

The product of its digits is 1152, while the sum is 26.

The square root of 221161283 is about 14871.4922923021. The cubic root of 221161283 is about 604.7413989391.

The spelling of 221161283 in words is "two hundred twenty-one million, one hundred sixty-one thousand, two hundred eighty-three".