221468485 has 24 divisors (see below), whose sum is σ = 312905376. Its totient is φ = 150020640.

The previous prime is 221468473. The next prime is 221468497. The reversal of 221468485 is 584864122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221468473) and next prime (221468497).

It is not a de Polignac number, because 221468485 - 2⁵ = 221468453 is a prime.

It is a super-3 number, since 3×221468485³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14890 + ... + 25780.

It is an arithmetic number, because the mean of its divisors is an integer number (13037724).

Almost surely, 2^221468485 is an apocalyptic number.

It is an amenable number.

221468485 is a deficient number, since it is larger than the sum of its proper divisors (91436891).

221468485 is a wasteful number, since it uses less digits than its factorization.

221468485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10993 (or 10986 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 221468485 is about 14881.8172613428. The cubic root of 221468485 is about 605.0212728444.

The spelling of 221468485 in words is "two hundred twenty-one million, four hundred sixty-eight thousand, four hundred eighty-five".