121445396918 has 8 divisors (see below), whose sum is σ = 182178870312. Its totient is φ = 60719106816.

The previous prime is 121445396843. The next prime is 121445396921. The reversal of 121445396918 is 819693544121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 121445396918.

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, 1753355 + ... + 1821302.

It is an arithmetic number, because the mean of its divisors is an integer number (22772358789).

Almost surely, 2^121445396918 is an apocalyptic number.

121445396918 is a deficient number, since it is larger than the sum of its proper divisors (60733473394).

121445396918 is a wasteful number, since it uses less digits than its factorization.

121445396918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591646.

The product of its digits is 1866240, while the sum is 53.

The spelling of 121445396918 in words is "one hundred twenty-one billion, four hundred forty-five million, three hundred ninety-six thousand, nine hundred eighteen".