1112121131 has 4 divisors (see below), whose sum is σ = 1213223064. Its totient is φ = 1011019200.

The previous prime is 1112121107. The next prime is 1112121161. The reversal of 1112121131 is 1311212111.

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

It is a cyclic number.

It is not a de Polignac number, because 1112121131 - 2¹⁸ = 1111858987 is a prime.

It is a super-2 number, since 2×1112121131² = 2473626820033438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112121161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50550950 + ... + 50550971.

It is an arithmetic number, because the mean of its divisors is an integer number (303305766).

Almost surely, 2^1112121131 is an apocalyptic number.

1112121131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1112121131 is a deficient number, since it is larger than the sum of its proper divisors (101101933).

1112121131 is a wasteful number, since it uses less digits than its factorization.

1112121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101101932.

The product of its digits is 12, while the sum is 14.

The square root of 1112121131 is about 33348.4801902575. The cubic root of 1112121131 is about 1036.0579102679.

Adding to 1112121131 its reverse (1311212111), we get a palindrome (2423333242).

The spelling of 1112121131 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred thirty-one".