1101202145 has 4 divisors (see below), whose sum is σ = 1321442580. Its totient is φ = 880961712.

The previous prime is 1101202139. The next prime is 1101202159. The reversal of 1101202145 is 5412021011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 283013329 + 818188816 = 16823^2 + 28604^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101202145 - 2²⁸ = 832766689 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 110120210 + ... + 110120219.

It is an arithmetic number, because the mean of its divisors is an integer number (330360645).

Almost surely, 2^1101202145 is an apocalyptic number.

It is an amenable number.

1101202145 is a deficient number, since it is larger than the sum of its proper divisors (220240435).

1101202145 is an equidigital number, since it uses as much as digits as its factorization.

1101202145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220240434.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1101202145 is about 33184.3659725480. The cubic root of 1101202145 is about 1032.6560241207.

Adding to 1101202145 its reverse (5412021011), we get a palindrome (6513223156).

The spelling of 1101202145 in words is "one billion, one hundred one million, two hundred two thousand, one hundred forty-five".