121153443 has 16 divisors (see below), whose sum is σ = 177434880. Its totient is φ = 73190304.

The previous prime is 121153427. The next prime is 121153453. The reversal of 121153443 is 344351121.

It is a happy number.

It is not a de Polignac number, because 121153443 - 2⁴ = 121153427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121153423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44896 + ... + 47517.

It is an arithmetic number, because the mean of its divisors is an integer number (11089680).

Almost surely, 2^121153443 is an apocalyptic number.

121153443 is a deficient number, since it is larger than the sum of its proper divisors (56281437).

121153443 is a wasteful number, since it uses less digits than its factorization.

121153443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92458.

The product of its digits is 1440, while the sum is 24.

The square root of 121153443 is about 11006.9724720288. The cubic root of 121153443 is about 494.8177310770.

The spelling of 121153443 in words is "one hundred twenty-one million, one hundred fifty-three thousand, four hundred forty-three".