12121277604 has 48 divisors (see below), whose sum is σ = 28595804160. Its totient is φ = 3995961120.

The previous prime is 12121277591. The next prime is 12121277617. The reversal of 12121277604 is 40677212121.

It is an interprime number because it is at equal distance from previous prime (12121277591) and next prime (12121277617).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424869 + ... + 452499.

It is an arithmetic number, because the mean of its divisors is an integer number (595745920).

Almost surely, 2^12121277604 is an apocalyptic number.

It is an amenable number.

12121277604 is an abundant number, since it is smaller than the sum of its proper divisors (16474526556).

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

12121277604 is a wasteful number, since it uses less digits than its factorization.

12121277604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28040 (or 28038 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

Adding to 12121277604 its reverse (40677212121), we get a palindrome (52798489725).

The spelling of 12121277604 in words is "twelve billion, one hundred twenty-one million, two hundred seventy-seven thousand, six hundred four".