271222161 has 8 divisors (see below), whose sum is σ = 413290944. Its totient is φ = 154984080.

The previous prime is 271222157. The next prime is 271222213. The reversal of 271222161 is 161222172.

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

It is not a de Polignac number, because 271222161 - 2² = 271222157 is a prime.

It is a super-2 number, since 2×271222161² = 147122921235019842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (271222361) 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, 6457650 + ... + 6457691.

It is an arithmetic number, because the mean of its divisors is an integer number (51661368).

Almost surely, 2^271222161 is an apocalyptic number.

271222161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

271222161 is a deficient number, since it is larger than the sum of its proper divisors (142068783).

271222161 is a wasteful number, since it uses less digits than its factorization.

271222161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12915351.

The product of its digits is 672, while the sum is 24.

The square root of 271222161 is about 16468.8239106501. The cubic root of 271222161 is about 647.3041489127.

The spelling of 271222161 in words is "two hundred seventy-one million, two hundred twenty-two thousand, one hundred sixty-one".