121451121 has 12 divisors (see below), whose sum is σ = 191377680. Its totient is φ = 73606680.

The previous prime is 121451107. The next prime is 121451147. The reversal of 121451121 is 121154121.

It is not a de Polignac number, because 121451121 - 2¹¹ = 121449073 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121451094 and 121451103.

It is not an unprimeable number, because it can be changed into a prime (121451171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 613291 + ... + 613488.

It is an arithmetic number, because the mean of its divisors is an integer number (15948140).

Almost surely, 2^121451121 is an apocalyptic number.

121451121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121451121 is a deficient number, since it is larger than the sum of its proper divisors (69926559).

121451121 is a wasteful number, since it uses less digits than its factorization.

121451121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226796 (or 1226793 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 121451121 is about 11020.4864230214. The cubic root of 121451121 is about 495.2226607705. Note that the first 3 decimals are identical.

The spelling of 121451121 in words is "one hundred twenty-one million, four hundred fifty-one thousand, one hundred twenty-one".