1205253236213 has 8 divisors (see below), whose sum is σ = 1374315907608. Its totient is φ = 1047097833984.

The previous prime is 1205253236197. The next prime is 1205253236261. The reversal of 1205253236213 is 3126323525021.

It can be written as a sum of positive squares in 4 ways, for example, as 2234736529 + 1203018499684 = 47273^2 + 1096822^2 .

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 1205253236213 - 2⁴ = 1205253236197 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 (1205253236713) 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, 2726817056 + ... + 2726817497.

It is an arithmetic number, because the mean of its divisors is an integer number (171789488451).

Almost surely, 2^{1205253236213} is an apocalyptic number.

1205253236213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1205253236213 is a deficient number, since it is larger than the sum of its proper divisors (169062671395).

1205253236213 is a wasteful number, since it uses less digits than its factorization.

1205253236213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453634583.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 1205253236213 in words is "one trillion, two hundred five billion, two hundred fifty-three million, two hundred thirty-six thousand, two hundred thirteen".