1112121045 has 48 divisors (see below), whose sum is σ = 2332661760. Its totient is φ = 478490112.

The previous prime is 1112120987. The next prime is 1112121071. The reversal of 1112121045 is 5401212111.

It is not a de Polignac number, because 1112121045 - 2⁶ = 1112120981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98485 + ... + 109194.

It is an arithmetic number, because the mean of its divisors is an integer number (48597120).

Almost surely, 2^1112121045 is an apocalyptic number.

1112121045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1112121045 is an abundant number, since it is smaller than the sum of its proper divisors (1220540715).

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

1112121045 is a wasteful number, since it uses less digits than its factorization.

1112121045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207714 (or 207711 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1112121045 is about 33348.4789008434. The cubic root of 1112121045 is about 1036.0578835619.

Adding to 1112121045 its reverse (5401212111), we get a palindrome (6513333156).

The spelling of 1112121045 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, forty-five".