121217167 has 4 divisors (see below), whose sum is σ = 121542520. Its totient is φ = 120891816.

The previous prime is 121217149. The next prime is 121217219. The reversal of 121217167 is 761712121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 761712121 = 8111 ⋅93911.

It is a cyclic number.

It is not a de Polignac number, because 121217167 - 2¹¹ = 121215119 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 (121217147) 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, 162117 + ... + 162862.

It is an arithmetic number, because the mean of its divisors is an integer number (30385630).

Almost surely, 2^121217167 is an apocalyptic number.

121217167 is a deficient number, since it is larger than the sum of its proper divisors (325353).

121217167 is an equidigital number, since it uses as much as digits as its factorization.

121217167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325352.

The product of its digits is 1176, while the sum is 28.

The square root of 121217167 is about 11009.8668021007. The cubic root of 121217167 is about 494.9044702226.

Adding to 121217167 its reverse (761712121), we get a palindrome (882929288).

The spelling of 121217167 in words is "one hundred twenty-one million, two hundred seventeen thousand, one hundred sixty-seven".