221485011 has 8 divisors (see below), whose sum is σ = 322160064. Its totient is φ = 134233320.

The previous prime is 221484983. The next prime is 221485013. The reversal of 221485011 is 110584122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221485011 - 2⁵ = 221484979 is a prime.

It is a super-2 number, since 2×221485011² = 98111220195340242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221485013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3355801 + ... + 3355866.

It is an arithmetic number, because the mean of its divisors is an integer number (40270008).

Almost surely, 2^221485011 is an apocalyptic number.

221485011 is a deficient number, since it is larger than the sum of its proper divisors (100675053).

221485011 is a wasteful number, since it uses less digits than its factorization.

221485011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6711681.

The product of its (nonzero) digits is 640, while the sum is 24.

The square root of 221485011 is about 14882.3724923145. The cubic root of 221485011 is about 605.0363213856.

The spelling of 221485011 in words is "two hundred twenty-one million, four hundred eighty-five thousand, eleven".