221674121 has 8 divisors (see below), whose sum is σ = 233830080. Its totient is φ = 209567088.

The previous prime is 221674097. The next prime is 221674129. The reversal of 221674121 is 121476122.

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 221674121 - 2¹⁰ = 221673097 is a prime.

It is a super-2 number, since 2×221674121² = 98278831842245282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221674129) 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, 2726 + ... + 21231.

It is an arithmetic number, because the mean of its divisors is an integer number (29228760).

Almost surely, 2^221674121 is an apocalyptic number.

It is an amenable number.

221674121 is a deficient number, since it is larger than the sum of its proper divisors (12155959).

221674121 is a wasteful number, since it uses less digits than its factorization.

221674121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24463.

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

The square root of 221674121 is about 14888.7246263741. The cubic root of 221674121 is about 605.2084712889.

The spelling of 221674121 in words is "two hundred twenty-one million, six hundred seventy-four thousand, one hundred twenty-one".