121030112021 has 24 divisors (see below), whose sum is σ = 149953420800. Its totient is φ = 95648319936.

The previous prime is 121030111997. The next prime is 121030112051. The reversal of 121030112021 is 120211030121.

It is not a de Polignac number, because 121030112021 - 2⁶ = 121030111957 is a prime.

It is a super-3 number, since 3×121030112021³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121030111987 and 121030112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030112051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 961655 + ... + 1080203.

It is an arithmetic number, because the mean of its divisors is an integer number (6248059200).

Almost surely, 2^121030112021 is an apocalyptic number.

It is an amenable number.

121030112021 is a deficient number, since it is larger than the sum of its proper divisors (28923308779).

121030112021 is a wasteful number, since it uses less digits than its factorization.

121030112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119445 (or 119432 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121030112021 its reverse (120211030121), we get a palindrome (241241142142).

The spelling of 121030112021 in words is "one hundred twenty-one billion, thirty million, one hundred twelve thousand, twenty-one".