12101100442 has 4 divisors (see below), whose sum is σ = 18151650666. Its totient is φ = 6050550220.

The previous prime is 12101100439. The next prime is 12101100467. The reversal of 12101100442 is 24400110121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12090981681 + 10118761 = 109959^2 + 3181^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3025275109 + ... + 3025275112.

Almost surely, 2^12101100442 is an apocalyptic number.

12101100442 is a deficient number, since it is larger than the sum of its proper divisors (6050550224).

12101100442 is an equidigital number, since it uses as much as digits as its factorization.

12101100442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6050550223.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12101100442 its reverse (24400110121), we get a palindrome (36501210563).

The spelling of 12101100442 in words is "twelve billion, one hundred one million, one hundred thousand, four hundred forty-two".