12121250466 has 32 divisors (see below), whose sum is σ = 27007565760. Its totient is φ = 3601007424.

The previous prime is 12121250443. The next prime is 12121250501. The reversal of 12121250466 is 66405212121.

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, 2677060 + ... + 2681583.

It is an arithmetic number, because the mean of its divisors is an integer number (843986430).

Almost surely, 2^12121250466 is an apocalyptic number.

12121250466 is an abundant number, since it is smaller than the sum of its proper divisors (14886315294).

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

12121250466 is a wasteful number, since it uses less digits than its factorization.

12121250466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5358690.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 12121250466 its reverse (66405212121), we get a palindrome (78526462587).

The spelling of 12121250466 in words is "twelve billion, one hundred twenty-one million, two hundred fifty thousand, four hundred sixty-six".