221013310 has 32 divisors (see below), whose sum is σ = 458695872. Its totient is φ = 75102720.

The previous prime is 221013283. The next prime is 221013319. The reversal of 221013310 is 13310122.

It is a super-2 number, since 2×221013310² = 97693766394312200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221013319) 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, 6061 + ... + 21880.

It is an arithmetic number, because the mean of its divisors is an integer number (14334246).

Almost surely, 2^221013310 is an apocalyptic number.

221013310 is an abundant number, since it is smaller than the sum of its proper divisors (237682562).

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

221013310 is a wasteful number, since it uses less digits than its factorization.

221013310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28068.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 221013310 is about 14866.5164043228. The cubic root of 221013310 is about 604.6064968401.

Adding to 221013310 its reverse (13310122), we get a palindrome (234323432).

The spelling of 221013310 in words is "two hundred twenty-one million, thirteen thousand, three hundred ten".