11212001442 has 24 divisors (see below), whose sum is σ = 24949229916. Its totient is φ = 3636324576.

The previous prime is 11212001419. The next prime is 11212001473. The reversal of 11212001442 is 24410021211.

11212001442 is a `hidden beast` number, since 1 + 1 + 21 + 200 + 1 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11159598321 + 52403121 = 105639^2 + 7239^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8416753 + ... + 8418084.

Almost surely, 2^11212001442 is an apocalyptic number.

11212001442 is an abundant number, since it is smaller than the sum of its proper divisors (13737228474).

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

11212001442 is a wasteful number, since it uses less digits than its factorization.

11212001442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16834882 (or 16834879 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11212001442 its reverse (24410021211), we get a palindrome (35622022653).

The spelling of 11212001442 in words is "eleven billion, two hundred twelve million, one thousand, four hundred forty-two".