221013364 has 48 divisors (see below), whose sum is σ = 464115456. Its totient is φ = 90748800.

The previous prime is 221013361. The next prime is 221013367. The reversal of 221013364 is 463310122.

221013364 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221013361) and next prime (221013367).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221013361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22774 + ... + 30994.

It is an arithmetic number, because the mean of its divisors is an integer number (9669072).

Almost surely, 2^221013364 is an apocalyptic number.

It is an amenable number.

221013364 is an abundant number, since it is smaller than the sum of its proper divisors (243102092).

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

221013364 is a wasteful number, since it uses less digits than its factorization.

221013364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8296 (or 8294 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 221013364 is about 14866.5182204846. The cubic root of 221013364 is about 604.6065460811.

Adding to 221013364 its reverse (463310122), we get a palindrome (684323486).

The spelling of 221013364 in words is "two hundred twenty-one million, thirteen thousand, three hundred sixty-four".