221234022 has 48 divisors (see below), whose sum is σ = 509652000. Its totient is φ = 69117696.

The previous prime is 221234021. The next prime is 221234023. The reversal of 221234022 is 220432122.

It is an interprime number because it is at equal distance from previous prime (221234021) and next prime (221234023).

It is a super-3 number, since 3×221234022³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221233986 and 221234004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221234021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79104 + ... + 81852.

It is an arithmetic number, because the mean of its divisors is an integer number (10617750).

Almost surely, 2^221234022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221234022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254826000).

221234022 is an abundant number, since it is smaller than the sum of its proper divisors (288417978).

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

221234022 is a wasteful number, since it uses less digits than its factorization.

221234022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037 (or 3034 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 221234022 is about 14873.9376763519. The cubic root of 221234022 is about 604.8076906251.

Adding to 221234022 its reverse (220432122), we get a palindrome (441666144).

The spelling of 221234022 in words is "two hundred twenty-one million, two hundred thirty-four thousand, twenty-two".