12155053238 has 8 divisors (see below), whose sum is σ = 18620507232. Its totient is φ = 5948217496.

The previous prime is 12155053237. The next prime is 12155053247. The reversal of 12155053238 is 83235055121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12155053238² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12155053198 and 12155053207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155053237) 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, 64654445 + ... + 64654632.

It is an arithmetic number, because the mean of its divisors is an integer number (2327563404).

Almost surely, 2^12155053238 is an apocalyptic number.

12155053238 is a deficient number, since it is larger than the sum of its proper divisors (6465453994).

12155053238 is a wasteful number, since it uses less digits than its factorization.

12155053238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129309126.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 12155053238 in words is "twelve billion, one hundred fifty-five million, fifty-three thousand, two hundred thirty-eight".