12130155 has 40 divisors (see below), whose sum is σ = 22145904. Its totient is φ = 6350400.

The previous prime is 12130109. The next prime is 12130159. The reversal of 12130155 is 55103121.

It is not a de Polignac number, because 12130155 - 2²¹ = 10033003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12130159) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24460 + ... + 24950.

Almost surely, 2^12130155 is an apocalyptic number.

12130155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12130155 is a deficient number, since it is larger than the sum of its proper divisors (10015749).

12130155 is an equidigital number, since it uses as much as digits as its factorization.

12130155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 12130155 is about 3482.8372054978. The cubic root of 12130155 is about 229.7675976374.

Adding to 12130155 its reverse (55103121), we get a palindrome (67233276).

It can be divided in two parts, 121 and 30155, that added together give a square (30276 = 174²).

The spelling of 12130155 in words is "twelve million, one hundred thirty thousand, one hundred fifty-five".