1112121445 has 8 divisors (see below), whose sum is σ = 1335565440. Its totient is φ = 889017360.

The previous prime is 1112121443. The next prime is 1112121449. The reversal of 1112121445 is 5441212111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1112121445 - 2¹ = 1112121443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112121443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77721 + ... + 90910.

It is an arithmetic number, because the mean of its divisors is an integer number (166945680).

Almost surely, 2^1112121445 is an apocalyptic number.

It is an amenable number.

1112121445 is a deficient number, since it is larger than the sum of its proper divisors (223443995).

1112121445 is a wasteful number, since it uses less digits than its factorization.

1112121445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169955.

The product of its digits is 320, while the sum is 22.

The square root of 1112121445 is about 33348.4848981179. The cubic root of 1112121445 is about 1036.0580077760.

Adding to 1112121445 its reverse (5441212111), we get a palindrome (6553333556).

The spelling of 1112121445 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, four hundred forty-five".