121451229 has 6 divisors (see below), whose sum is σ = 175429566. Its totient is φ = 80967480.

The previous prime is 121451219. The next prime is 121451257. The reversal of 121451229 is 922154121.

121451229 is a `hidden beast` number, since 121 + 4 + 512 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 113998329 + 7452900 = 10677^2 + 2730^2 .

It is not a de Polignac number, because 121451229 - 2²¹ = 119354077 is a prime.

It is a super-2 number, since 2×121451229² = 29500802051220882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121451219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6747282 + ... + 6747299.

It is an arithmetic number, because the mean of its divisors is an integer number (29238261).

Almost surely, 2^121451229 is an apocalyptic number.

It is an amenable number.

121451229 is a deficient number, since it is larger than the sum of its proper divisors (53978337).

121451229 is a wasteful number, since it uses less digits than its factorization.

121451229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13494587 (or 13494584 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 121451229 is about 11020.4913229856. The cubic root of 121451229 is about 495.2228075622. Note that the first 3 decimals are identical.

The spelling of 121451229 in words is "one hundred twenty-one million, four hundred fifty-one thousand, two hundred twenty-nine".