221011322 has 16 divisors (see below), whose sum is σ = 401163840. Its totient is φ = 89147328.

The previous prime is 221011319. The next prime is 221011327. The reversal of 221011322 is 223110122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 221011297 and 221011306.

It is not an unprimeable number, because it can be changed into a prime (221011327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464072 + ... + 464547.

It is an arithmetic number, because the mean of its divisors is an integer number (25072740).

Almost surely, 2^221011322 is an apocalyptic number.

221011322 is a deficient number, since it is larger than the sum of its proper divisors (180152518).

221011322 is a wasteful number, since it uses less digits than its factorization.

221011322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928645.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 221011322 is about 14866.4495425101. The cubic root of 221011322 is about 604.6046840363.

Adding to 221011322 its reverse (223110122), we get a palindrome (444121444).

The spelling of 221011322 in words is "two hundred twenty-one million, eleven thousand, three hundred twenty-two".