12121241442 has 16 divisors (see below), whose sum is σ = 24433370112. Its totient is φ = 4008599280.

The previous prime is 12121241441. The next prime is 12121241449. The reversal of 12121241442 is 24414212121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12121241441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7952809 + ... + 7954332.

It is an arithmetic number, because the mean of its divisors is an integer number (1527085632).

Almost surely, 2^12121241442 is an apocalyptic number.

12121241442 is an abundant number, since it is smaller than the sum of its proper divisors (12312128670).

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

12121241442 is a wasteful number, since it uses less digits than its factorization.

12121241442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15907273.

The product of its digits is 1024, while the sum is 24.

Adding to 12121241442 its reverse (24414212121), we get a palindrome (36535453563).

The spelling of 12121241442 in words is "twelve billion, one hundred twenty-one million, two hundred forty-one thousand, four hundred forty-two".