1125121502213 has 8 divisors (see below), whose sum is σ = 1155573920760. Its totient is φ = 1094671385280.

The previous prime is 1125121502161. The next prime is 1125121502221. The reversal of 1125121502213 is 3122051215211.

It can be written as a sum of positive squares in 4 ways, for example, as 389123944804 + 735997557409 = 623798^2 + 857903^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1125121502213 - 2³⁰ = 1124047760389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125121592213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439403 + ... + 1563111.

It is an arithmetic number, because the mean of its divisors is an integer number (144446740095).

Almost surely, 2^{1125121502213} is an apocalyptic number.

It is an amenable number.

1125121502213 is a deficient number, since it is larger than the sum of its proper divisors (30452418547).

1125121502213 is a wasteful number, since it uses less digits than its factorization.

1125121502213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150807.

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 1125121502213 its reverse (3122051215211), we get a palindrome (4247172717424).

The spelling of 1125121502213 in words is "one trillion, one hundred twenty-five billion, one hundred twenty-one million, five hundred two thousand, two hundred thirteen".