12055121004 has 24 divisors (see below), whose sum is σ = 28147497840. Its totient is φ = 4015676224.

The previous prime is 12055121003. The next prime is 12055121033. The reversal of 12055121004 is 40012155021.

It is not an unprimeable number, because it can be changed into a prime (12055121003) 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, 318519 + ... + 354350.

It is an arithmetic number, because the mean of its divisors is an integer number (1172812410).

Almost surely, 2^12055121004 is an apocalyptic number.

It is an amenable number.

12055121004 is an abundant number, since it is smaller than the sum of its proper divisors (16092376836).

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

12055121004 is a wasteful number, since it uses less digits than its factorization.

12055121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674369 (or 674367 counting only the distinct ones).

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

Adding to 12055121004 its reverse (40012155021), we get a palindrome (52067276025).

The spelling of 12055121004 in words is "twelve billion, fifty-five million, one hundred twenty-one thousand, four".