121033121 has 4 divisors (see below), whose sum is σ = 132036144. Its totient is φ = 110030100.

The previous prime is 121033111. The next prime is 121033139. The reversal of 121033121 is 121330121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121330121 = 11 ⋅11030011.

It is a cyclic number.

It is not a de Polignac number, because 121033121 - 2¹⁴ = 121016737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121033096 and 121033105.

It is not an unprimeable number, because it can be changed into a prime (121033111) 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, 5501495 + ... + 5501516.

It is an arithmetic number, because the mean of its divisors is an integer number (33009036).

Almost surely, 2^121033121 is an apocalyptic number.

121033121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121033121 is a deficient number, since it is larger than the sum of its proper divisors (11003023).

121033121 is a wasteful number, since it uses less digits than its factorization.

121033121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003022.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121033121 is about 11001.5053969900. The cubic root of 121033121 is about 494.6538695087.

Adding to 121033121 its reverse (121330121), we get a palindrome (242363242).

The spelling of 121033121 in words is "one hundred twenty-one million, thirty-three thousand, one hundred twenty-one".