121334807828 has 24 divisors (see below), whose sum is σ = 228757080552. Its totient is φ = 55979218944.

The previous prime is 121334807819. The next prime is 121334807887. The reversal of 121334807828 is 828708433121.

It can be written as a sum of positive squares in 4 ways, for example, as 20262953104 + 101071854724 = 142348^2 + 317918^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309725 + ... + 581892.

It is an arithmetic number, because the mean of its divisors is an integer number (9531545023).

Almost surely, 2^121334807828 is an apocalyptic number.

It is an amenable number.

121334807828 is a deficient number, since it is larger than the sum of its proper divisors (107422272724).

121334807828 is a wasteful number, since it uses less digits than its factorization.

121334807828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894251 (or 894249 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The spelling of 121334807828 in words is "one hundred twenty-one billion, three hundred thirty-four million, eight hundred seven thousand, eight hundred twenty-eight".