121389208844 has 24 divisors (see below), whose sum is σ = 213437659008. Its totient is φ = 60407159040.

The previous prime is 121389208841. The next prime is 121389208979. The reversal of 121389208844 is 448802983121.

It is a junction number, because it is equal to n+sod(n) for n = 121389208792 and 121389208801.

It is not an unprimeable number, because it can be changed into a prime (121389208841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4053494 + ... + 4083330.

It is an arithmetic number, because the mean of its divisors is an integer number (8893235792).

Almost surely, 2^121389208844 is an apocalyptic number.

It is an amenable number.

121389208844 is a deficient number, since it is larger than the sum of its proper divisors (92048450164).

121389208844 is a wasteful number, since it uses less digits than its factorization.

121389208844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34625 (or 34623 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The spelling of 121389208844 in words is "one hundred twenty-one billion, three hundred eighty-nine million, two hundred eight thousand, eight hundred forty-four".