12421215722 has 8 divisors (see below), whose sum is σ = 18637550400. Its totient is φ = 6208698924.

The previous prime is 12421215701. The next prime is 12421215727. The reversal of 12421215722 is 22751212421.

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

It is not an unprimeable number, because it can be changed into a prime (12421215727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946322 + ... + 959357.

It is an arithmetic number, because the mean of its divisors is an integer number (2329693800).

Almost surely, 2^12421215722 is an apocalyptic number.

12421215722 is a deficient number, since it is larger than the sum of its proper divisors (6216334678).

12421215722 is a wasteful number, since it uses less digits than its factorization.

12421215722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908940.

The product of its digits is 4480, while the sum is 29.

The spelling of 12421215722 in words is "twelve billion, four hundred twenty-one million, two hundred fifteen thousand, seven hundred twenty-two".