121429219718 has 8 divisors (see below), whose sum is σ = 183350080560. Its totient is φ = 60312526200.

The previous prime is 121429219687. The next prime is 121429219729. The reversal of 121429219718 is 817912924121.

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

It is a congruent 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, 201041453 + ... + 201042056.

It is an arithmetic number, because the mean of its divisors is an integer number (22918760070).

Almost surely, 2^121429219718 is an apocalyptic number.

121429219718 is a deficient number, since it is larger than the sum of its proper divisors (61920860842).

121429219718 is a wasteful number, since it uses less digits than its factorization.

121429219718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402083662.

The product of its digits is 145152, while the sum is 47.

The spelling of 121429219718 in words is "one hundred twenty-one billion, four hundred twenty-nine million, two hundred nineteen thousand, seven hundred eighteen".