11215397293 has 4 divisors (see below), whose sum is σ = 11218255740. Its totient is φ = 11212538848.

The previous prime is 11215397251. The next prime is 11215397321. The reversal of 11215397293 is 39279351211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39279351211 = 2203 ⋅17829937.

It can be written as a sum of positive squares in 2 ways, for example, as 5897779209 + 5317618084 = 76797^2 + 72922^2 .

It is a cyclic number.

It is not a de Polignac number, because 11215397293 - 2¹⁷ = 11215266221 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 (11215397243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423330 + ... + 1431187.

It is an arithmetic number, because the mean of its divisors is an integer number (2804563935).

Almost surely, 2^11215397293 is an apocalyptic number.

It is an amenable number.

11215397293 is a deficient number, since it is larger than the sum of its proper divisors (2858447).

11215397293 is an equidigital number, since it uses as much as digits as its factorization.

11215397293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2858446.

The product of its digits is 102060, while the sum is 43.

The spelling of 11215397293 in words is "eleven billion, two hundred fifteen million, three hundred ninety-seven thousand, two hundred ninety-three".