220143161 has 8 divisors (see below), whose sum is σ = 251685504. Its totient is φ = 188624160.

The previous prime is 220143151. The next prime is 220143167. The reversal of 220143161 is 161341022.

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 220143161 - 2¹⁰ = 220142137 is a prime.

It is a super-2 number, since 2×220143161² = 96926022670143842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220143167) 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, 25901 + ... + 33333.

It is an arithmetic number, because the mean of its divisors is an integer number (31460688).

Almost surely, 2^220143161 is an apocalyptic number.

It is an amenable number.

220143161 is a deficient number, since it is larger than the sum of its proper divisors (31542343).

220143161 is an equidigital number, since it uses as much as digits as its factorization.

220143161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 220143161 is about 14837.2221456713. Note that the first 3 decimals coincide. The cubic root of 220143161 is about 603.8119901143.

Adding to 220143161 its reverse (161341022), we get a palindrome (381484183).

The spelling of 220143161 in words is "two hundred twenty million, one hundred forty-three thousand, one hundred sixty-one".