12232221442 has 8 divisors (see below), whose sum is σ = 20969522496. Its totient is φ = 5242380612.

The previous prime is 12232221437. The next prime is 12232221461. The reversal of 12232221442 is 24412223221.

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

It is a super-2 number, since 2×12232221442² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436865038 + ... + 436865065.

It is an arithmetic number, because the mean of its divisors is an integer number (2621190312).

Almost surely, 2^12232221442 is an apocalyptic number.

12232221442 is a deficient number, since it is larger than the sum of its proper divisors (8737301054).

12232221442 is an equidigital number, since it uses as much as digits as its factorization.

12232221442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873730112.

The product of its digits is 3072, while the sum is 25.

Adding to 12232221442 its reverse (24412223221), we get a palindrome (36644444663).

The spelling of 12232221442 in words is "twelve billion, two hundred thirty-two million, two hundred twenty-one thousand, four hundred forty-two".