22220242 has 24 divisors (see below), whose sum is σ = 37606896. Its totient is φ = 9765000.

The previous prime is 22220227. The next prime is 22220249. The reversal of 22220242 is 24202222.

It is not an unprimeable number, because it can be changed into a prime (22220249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20617 + ... + 21667.

It is an arithmetic number, because the mean of its divisors is an integer number (1566954).

Almost surely, 2^22220242 is an apocalyptic number.

22220242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22220242 is a deficient number, since it is larger than the sum of its proper divisors (15386654).

22220242 is a wasteful number, since it uses less digits than its factorization.

22220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1095 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22220242 is about 4713.8351689468. The cubic root of 22220242 is about 281.1358705987.

Adding to 22220242 its reverse (24202222), we get a palindrome (46422464).

The spelling of 22220242 in words is "twenty-two million, two hundred twenty thousand, two hundred forty-two".