221441022 has 48 divisors (see below), whose sum is σ = 524899440. Its totient is φ = 66912000.

The previous prime is 221440981. The next prime is 221441053. The reversal of 221441022 is 220144122.

221441022 is a `hidden beast` number, since 221 + 441 + 0 + 2 + 2 = 666.

It is a super-2 number, since 2×221441022² = 98072252448808968, which contains 22 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 = 221440986 and 221441004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78004 + ... + 80792.

It is an arithmetic number, because the mean of its divisors is an integer number (10935405).

Almost surely, 2^221441022 is an apocalyptic number.

221441022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 221441022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262449720).

221441022 is an abundant number, since it is smaller than the sum of its proper divisors (303458418).

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

221441022 is a wasteful number, since it uses less digits than its factorization.

221441022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209 (or 3206 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 221441022 is about 14880.8945295637. The cubic root of 221441022 is about 604.9962634380.

Adding to 221441022 its reverse (220144122), we get a palindrome (441585144).

The spelling of 221441022 in words is "two hundred twenty-one million, four hundred forty-one thousand, twenty-two".