1121231107 has 16 divisors (see below), whose sum is σ = 1219300992. Its totient is φ = 1026984960.

The previous prime is 1121231101. The next prime is 1121231113. The reversal of 1121231107 is 7011321211.

It is an interprime number because it is at equal distance from previous prime (1121231101) and next prime (1121231113).

It is not a de Polignac number, because 1121231107 - 2³ = 1121231099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121231101) 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 15 ways as a sum of consecutive naturals, for example, 140743 + ... + 148495.

It is an arithmetic number, because the mean of its divisors is an integer number (76206312).

Almost surely, 2^1121231107 is an apocalyptic number.

1121231107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1121231107 is a deficient number, since it is larger than the sum of its proper divisors (98069885).

1121231107 is a wasteful number, since it uses less digits than its factorization.

1121231107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7998.

The product of its (nonzero) digits is 84, while the sum is 19.

The square root of 1121231107 is about 33484.7891885256. The cubic root of 1121231107 is about 1038.8791879322.

Adding to 1121231107 its reverse (7011321211), we get a palindrome (8132552318).

The spelling of 1121231107 in words is "one billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred seven".