12105104052 has 24 divisors (see below), whose sum is σ = 28432301632. Its totient is φ = 4008312000.

The previous prime is 12105104029. The next prime is 12105104057. The reversal of 12105104052 is 25040150121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105104057) 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, 3338449 + ... + 3342072.

Almost surely, 2^12105104052 is an apocalyptic number.

12105104052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12105104052 is an abundant number, since it is smaller than the sum of its proper divisors (16327197580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12105104052 is a wasteful number, since it uses less digits than its factorization.

12105104052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6680679 (or 6680677 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 12105104052 its reverse (25040150121), we get a palindrome (37145254173).

The spelling of 12105104052 in words is "twelve billion, one hundred five million, one hundred four thousand, fifty-two".