12215057119 has 4 divisors (see below), whose sum is σ = 12216862096. Its totient is φ = 12213252144.

The previous prime is 12215057093. The next prime is 12215057147. The reversal of 12215057119 is 91175051221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12215057119 - 2¹³ = 12215048927 is a prime.

It is a super-2 number, since 2×12215057119² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12215057159) 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, 892299 + ... + 905884.

It is an arithmetic number, because the mean of its divisors is an integer number (3054215524).

Almost surely, 2^12215057119 is an apocalyptic number.

12215057119 is a deficient number, since it is larger than the sum of its proper divisors (1804977).

12215057119 is an equidigital number, since it uses as much as digits as its factorization.

12215057119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804976.

The product of its (nonzero) digits is 6300, while the sum is 34.

The spelling of 12215057119 in words is "twelve billion, two hundred fifteen million, fifty-seven thousand, one hundred nineteen".