167241221 has 16 divisors (see below), whose sum is σ = 197021184. Its totient is φ = 138962304.

The previous prime is 167241143. The next prime is 167241229. The reversal of 167241221 is 122142761.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167241221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167241229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80036 + ... + 82098.

It is an arithmetic number, because the mean of its divisors is an integer number (12313824).

Almost surely, 2^167241221 is an apocalyptic number.

It is an amenable number.

167241221 is a deficient number, since it is larger than the sum of its proper divisors (29779963).

167241221 is a wasteful number, since it uses less digits than its factorization.

167241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420.

The product of its digits is 1344, while the sum is 26.

The square root of 167241221 is about 12932.1777361742. The cubic root of 167241221 is about 550.9528617353.

Adding to 167241221 its reverse (122142761), we get a palindrome (289383982).

The spelling of 167241221 in words is "one hundred sixty-seven million, two hundred forty-one thousand, two hundred twenty-one".