12124220442 has 16 divisors (see below), whose sum is σ = 24256430400. Its totient is φ = 4040075232.

The previous prime is 12124220393. The next prime is 12124220509. The reversal of 12124220442 is 24402242121.

It is a happy number.

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, 313078 + ... + 349665.

It is an arithmetic number, because the mean of its divisors is an integer number (1516026900).

Almost surely, 2^12124220442 is an apocalyptic number.

12124220442 is an abundant number, since it is smaller than the sum of its proper divisors (12132209958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12124220442 is a wasteful number, since it uses less digits than its factorization.

12124220442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665797.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 12124220442 its reverse (24402242121), we get a palindrome (36526462563).

The spelling of 12124220442 in words is "twelve billion, one hundred twenty-four million, two hundred twenty thousand, four hundred forty-two".