12000021194 has 8 divisors (see below), whose sum is σ = 20571464928. Its totient is φ = 5142866220.

The previous prime is 12000021181. The next prime is 12000021233. The reversal of 12000021194 is 49112000021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428572172 + ... + 428572199.

It is an arithmetic number, because the mean of its divisors is an integer number (2571433116).

Almost surely, 2^12000021194 is an apocalyptic number.

12000021194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12000021194 is a deficient number, since it is larger than the sum of its proper divisors (8571443734).

12000021194 is an equidigital number, since it uses as much as digits as its factorization.

12000021194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857144380.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12000021194 in words is "twelve billion, twenty-one thousand, one hundred ninety-four".