221011014 has 64 divisors (see below), whose sum is σ = 521404416. Its totient is φ = 61146144.

The previous prime is 221010971. The next prime is 221011057. The reversal of 221011014 is 410110122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221010971) and next prime (221011057).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202779 + ... + 203865.

It is an arithmetic number, because the mean of its divisors is an integer number (8146944).

Almost surely, 2^221011014 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221011014, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260702208).

221011014 is an abundant number, since it is smaller than the sum of its proper divisors (300393402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221011014 is a wasteful number, since it uses less digits than its factorization.

221011014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 221011014 is about 14866.4391836108. The cubic root of 221011014 is about 604.6044031784.

Adding to 221011014 its reverse (410110122), we get a palindrome (631121136).

The spelling of 221011014 in words is "two hundred twenty-one million, eleven thousand, fourteen".