12011202442 has 4 divisors (see below), whose sum is σ = 18016803666. Its totient is φ = 6005601220.

The previous prime is 12011202421. The next prime is 12011202443. The reversal of 12011202442 is 24420211021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24420211021 = 11779 ⋅2073199.

It can be written as a sum of positive squares in only one way, i.e., 10768005361 + 1243197081 = 103769^2 + 35259^2 .

It is not an unprimeable number, because it can be changed into a prime (12011202443) 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 as a sum of consecutive naturals, namely, 3002800609 + ... + 3002800612.

Almost surely, 2^12011202442 is an apocalyptic number.

12011202442 is a deficient number, since it is larger than the sum of its proper divisors (6005601224).

12011202442 is an equidigital number, since it uses as much as digits as its factorization.

12011202442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005601223.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12011202442 its reverse (24420211021), we get a palindrome (36431413463).

The spelling of 12011202442 in words is "twelve billion, eleven million, two hundred two thousand, four hundred forty-two".