12242220442 has 32 divisors (see below), whose sum is σ = 19433063808. Its totient is φ = 5772619776.

The previous prime is 12242220439. The next prime is 12242220449. The reversal of 12242220442 is 24402224221.

It is a super-2 number, since 2×12242220442² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12242220449) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 997113 + ... + 1009315.

It is an arithmetic number, because the mean of its divisors is an integer number (607283244).

Almost surely, 2^12242220442 is an apocalyptic number.

12242220442 is a deficient number, since it is larger than the sum of its proper divisors (7190843366).

12242220442 is a wasteful number, since it uses less digits than its factorization.

12242220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12534.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 12242220442 its reverse (24402224221), we get a palindrome (36644444663).

The spelling of 12242220442 in words is "twelve billion, two hundred forty-two million, two hundred twenty thousand, four hundred forty-two".