1250243210213 has 4 divisors (see below), whose sum is σ = 1250788455948. Its totient is φ = 1249697964480.

The previous prime is 1250243210197. The next prime is 1250243210239. The reversal of 1250243210213 is 3120123420521.

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 250447199809 + 999796010404 = 500447^2 + 999898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1250243210213 - 2⁴ = 1250243210197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1250243210413) 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, 272619428 + ... + 272624013.

It is an arithmetic number, because the mean of its divisors is an integer number (312697113987).

Almost surely, 2^{1250243210213} is an apocalyptic number.

It is an amenable number.

1250243210213 is a deficient number, since it is larger than the sum of its proper divisors (545245735).

1250243210213 is an equidigital number, since it uses as much as digits as its factorization.

1250243210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545245734.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 1250243210213 its reverse (3120123420521), we get a palindrome (4370366630734).

The spelling of 1250243210213 in words is "one trillion, two hundred fifty billion, two hundred forty-three million, two hundred ten thousand, two hundred thirteen".