12221031242 has 16 divisors (see below), whose sum is σ = 21215535360. Its totient is φ = 5171285808.

The previous prime is 12221031239. The next prime is 12221031269. The reversal of 12221031242 is 24213012221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5523773 + ... + 5525984.

It is an arithmetic number, because the mean of its divisors is an integer number (1325970960).

Almost surely, 2^12221031242 is an apocalyptic number.

12221031242 is a deficient number, since it is larger than the sum of its proper divisors (8994504118).

12221031242 is a wasteful number, since it uses less digits than its factorization.

12221031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11049845.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12221031242 its reverse (24213012221), we get a palindrome (36434043463).

The spelling of 12221031242 in words is "twelve billion, two hundred twenty-one million, thirty-one thousand, two hundred forty-two".