12281020194 has 32 divisors (see below), whose sum is σ = 25149346560. Its totient is φ = 3996238592.

The previous prime is 12281020163. The next prime is 12281020207. The reversal of 12281020194 is 49102018221.

It is a happy number.

It is a Curzon number.

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, 53722 + ... + 165674.

It is an arithmetic number, because the mean of its divisors is an integer number (785917080).

Almost surely, 2^12281020194 is an apocalyptic number.

12281020194 is an abundant number, since it is smaller than the sum of its proper divisors (12868326366).

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

12281020194 is a wasteful number, since it uses less digits than its factorization.

12281020194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112394.

The product of its (nonzero) digits is 2304, while the sum is 30.

The spelling of 12281020194 in words is "twelve billion, two hundred eighty-one million, twenty thousand, one hundred ninety-four".