12228721195358 has 4 divisors (see below), whose sum is σ = 18343081793040. Its totient is φ = 6114360597678.

The previous prime is 12228721195357. The next prime is 12228721195391. The reversal of 12228721195358 is 85359112782221.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228721195357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3057180298838 + ... + 3057180298841.

It is an arithmetic number, because the mean of its divisors is an integer number (4585770448260).

Almost surely, 2^{12228721195358} is an apocalyptic number.

12228721195358 is a deficient number, since it is larger than the sum of its proper divisors (6114360597682).

12228721195358 is an equidigital number, since it uses as much as digits as its factorization.

12228721195358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114360597681.

The product of its digits is 4838400, while the sum is 56.

The spelling of 12228721195358 in words is "twelve trillion, two hundred twenty-eight billion, seven hundred twenty-one million, one hundred ninety-five thousand, three hundred fifty-eight".