12011147442 has 72 divisors (see below), whose sum is σ = 31316957100. Its totient is φ = 3313412928.

The previous prime is 12011147399. The next prime is 12011147503. The reversal of 12011147442 is 24474111021.

It is a happy number.

12011147442 is a `hidden beast` number, since 1 + 201 + 1 + 14 + 7 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11929226841 + 81920601 = 109221^2 + 9051^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 209217 + ... + 260372.

Almost surely, 2^12011147442 is an apocalyptic number.

12011147442 is an abundant number, since it is smaller than the sum of its proper divisors (19305809658).

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

12011147442 is a wasteful number, since it uses less digits than its factorization.

12011147442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469640 (or 469630 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

Adding to 12011147442 its reverse (24474111021), we get a palindrome (36485258463).

The spelling of 12011147442 in words is "twelve billion, eleven million, one hundred forty-seven thousand, four hundred forty-two".