220949081 has 8 divisors (see below), whose sum is σ = 232733280. Its totient is φ = 209180448.

The previous prime is 220949077. The next prime is 220949087. The reversal of 220949081 is 180949022.

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 220949081 - 2² = 220949077 is a prime.

It is a super-2 number, since 2×220949081² = 97636992789489122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220949087) 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, 35645 + ... + 41381.

It is an arithmetic number, because the mean of its divisors is an integer number (29091660).

Almost surely, 2^220949081 is an apocalyptic number.

It is an amenable number.

220949081 is a deficient number, since it is larger than the sum of its proper divisors (11784199).

220949081 is a wasteful number, since it uses less digits than its factorization.

220949081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 220949081 is about 14864.3560573608. The cubic root of 220949081 is about 604.5479226407.

The spelling of 220949081 in words is "two hundred twenty million, nine hundred forty-nine thousand, eighty-one".