12155065213 has 8 divisors (see below), whose sum is σ = 12180833120. Its totient is φ = 12129322320.

The previous prime is 12155065211. The next prime is 12155065303. The reversal of 12155065213 is 31256055121.

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 12155065213 - 2¹ = 12155065211 is a prime.

It is a super-2 number, since 2×12155065213² (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 (12155065211) 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, 1202143 + ... + 1212211.

It is an arithmetic number, because the mean of its divisors is an integer number (1522604140).

Almost surely, 2^12155065213 is an apocalyptic number.

It is an amenable number.

12155065213 is a deficient number, since it is larger than the sum of its proper divisors (25767907).

12155065213 is a wasteful number, since it uses less digits than its factorization.

12155065213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 12155065213 in words is "twelve billion, one hundred fifty-five million, sixty-five thousand, two hundred thirteen".