9021201120121 has 4 divisors (see below), whose sum is σ = 9041565005712. Its totient is φ = 9000837234532.

The previous prime is 9021201120109. The next prime is 9021201120143. The reversal of 9021201120121 is 1210211021209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9021201120121 - 2¹⁷ = 9021200989049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9021201120092 and 9021201120101.

It is not an unprimeable number, because it can be changed into a prime (9021201120181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10181942131 + ... + 10181943016.

It is an arithmetic number, because the mean of its divisors is an integer number (2260391251428).

Almost surely, 2^{9021201120121} is an apocalyptic number.

It is an amenable number.

9021201120121 is a deficient number, since it is larger than the sum of its proper divisors (20363885591).

9021201120121 is a wasteful number, since it uses less digits than its factorization.

9021201120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20363885590.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 9021201120121 in words is "nine trillion, twenty-one billion, two hundred one million, one hundred twenty thousand, one hundred twenty-one".