121003113102021 has 48 divisors (see below), whose sum is σ = 183555649143360. Its totient is φ = 76704601881600.

The previous prime is 121003113102019. The next prime is 121003113102029. The reversal of 121003113102021 is 120201311300121.

121003113102021 is a `hidden beast` number, since 1 + 2 + 1 + 0 + 0 + 311 + 310 + 20 + 21 = 666.

It is not a de Polignac number, because 121003113102021 - 2¹ = 121003113102019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121003113101985 and 121003113102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121003113102029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66444021 + ... + 68240853.

It is an arithmetic number, because the mean of its divisors is an integer number (3824076023820).

Almost surely, 2^{121003113102021} is an apocalyptic number.

It is an amenable number.

121003113102021 is a deficient number, since it is larger than the sum of its proper divisors (62552536041339).

121003113102021 is a wasteful number, since it uses less digits than its factorization.

121003113102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800786 (or 1800783 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121003113102021 its reverse (120201311300121), we get a palindrome (241204424402142).

The spelling of 121003113102021 in words is "one hundred twenty-one trillion, three billion, one hundred thirteen million, one hundred two thousand, twenty-one".