220261181 has 8 divisors (see below), whose sum is σ = 252021120. Its totient is φ = 188574768.

The previous prime is 220261157. The next prime is 220261183. The reversal of 220261181 is 181162022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220261181 is a prime.

It is a super-2 number, since 2×220261181² = 97029975711029522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220261183) 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, 11801 + ... + 24078.

It is an arithmetic number, because the mean of its divisors is an integer number (31502640).

Almost surely, 2^220261181 is an apocalyptic number.

It is an amenable number.

220261181 is a deficient number, since it is larger than the sum of its proper divisors (31759939).

220261181 is an equidigital number, since it uses as much as digits as its factorization.

220261181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36763.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 220261181 is about 14841.1987723364. The cubic root of 220261181 is about 603.9198731844.

The spelling of 220261181 in words is "two hundred twenty million, two hundred sixty-one thousand, one hundred eighty-one".