1121102145 has 24 divisors (see below), whose sum is σ = 2057553576. Its totient is φ = 562748928.

The previous prime is 1121102119. The next prime is 1121102173. The reversal of 1121102145 is 5412011211.

It can be written as a sum of positive squares in 4 ways, for example, as 246835521 + 874266624 = 15711^2 + 29568^2 .

It is not a de Polignac number, because 1121102145 - 2⁵ = 1121102113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 731982 + ... + 733511.

It is an arithmetic number, because the mean of its divisors is an integer number (85731399).

Almost surely, 2^1121102145 is an apocalyptic number.

1121102145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121102145 is a deficient number, since it is larger than the sum of its proper divisors (936451431).

1121102145 is a wasteful number, since it uses less digits than its factorization.

1121102145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465521 (or 1465518 counting only the distinct ones).

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

The square root of 1121102145 is about 33482.8634528172. The cubic root of 1121102145 is about 1038.8393563953.

Adding to 1121102145 its reverse (5412011211), we get a palindrome (6533113356).

The spelling of 1121102145 in words is "one billion, one hundred twenty-one million, one hundred two thousand, one hundred forty-five".