221262 has 8 divisors (see below), whose sum is σ = 442536. Its totient is φ = 73752.

The previous prime is 221261. The next prime is 221281. The reversal of 221262 is 262122.

221262 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

221262 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18433 + ... + 18444.

It is an arithmetic number, because the mean of its divisors is an integer number (55317).

2²²¹²⁶² is an apocalyptic number.

221262 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221262 is a wasteful number, since it uses less digits than its factorization.

221262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36882.

The product of its digits is 96, while the sum is 15.

The square root of 221262 is about 470.3849487388. The cubic root of 221262 is about 60.4833184890.

Adding to 221262 its reverse (262122), we get a palindrome (483384).

It can be divided in two parts, 2 and 21262, that multiplied together give a palindrome (42524).

The spelling of 221262 in words is "two hundred twenty-one thousand, two hundred sixty-two".