221240022 has 8 divisors (see below), whose sum is σ = 442480056. Its totient is φ = 73746672.

The previous prime is 221240021. The next prime is 221240039. The reversal of 221240022 is 220042122.

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

221240022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221239983 and 221240010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221240021) 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, 18436663 + ... + 18436674.

It is an arithmetic number, because the mean of its divisors is an integer number (55310007).

Almost surely, 2^221240022 is an apocalyptic number.

221240022 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.

221240022 is a wasteful number, since it uses less digits than its factorization.

221240022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36873342.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 221240022 is about 14874.1393700610. The cubic root of 221240022 is about 604.8131581587.

Adding to 221240022 its reverse (220042122), we get a palindrome (441282144).

The spelling of 221240022 in words is "two hundred twenty-one million, two hundred forty thousand, twenty-two".