80222161 has 4 divisors (see below), whose sum is σ = 84444400. Its totient is φ = 75999924.

The previous prime is 80222111. The next prime is 80222171. The reversal of 80222161 is 16122208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-80222161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80222111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111091 + ... + 2111128.

It is an arithmetic number, because the mean of its divisors is an integer number (21111100).

Almost surely, 2^80222161 is an apocalyptic number.

It is an amenable number.

80222161 is a deficient number, since it is larger than the sum of its proper divisors (4222239).

80222161 is a wasteful number, since it uses less digits than its factorization.

80222161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4222238.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 80222161 is about 8956.6824773462. The cubic root of 80222161 is about 431.2854288333.

Adding to 80222161 its reverse (16122208), we get a palindrome (96344369).

The spelling of 80222161 in words is "eighty million, two hundred twenty-two thousand, one hundred sixty-one".