121043433 has 16 divisors (see below), whose sum is σ = 194155520. Its totient is φ = 65527056.

The previous prime is 121043431. The next prime is 121043441. The reversal of 121043433 is 334340121.

It is not a de Polignac number, because 121043433 - 2¹ = 121043431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121043431) 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, 151285 + ... + 152082.

It is an arithmetic number, because the mean of its divisors is an integer number (12134720).

Almost surely, 2^121043433 is an apocalyptic number.

It is an amenable number.

121043433 is a deficient number, since it is larger than the sum of its proper divisors (73112087).

121043433 is a wasteful number, since it uses less digits than its factorization.

121043433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303396.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 121043433 is about 11001.9740501421. The cubic root of 121043433 is about 494.6679172498.

Adding to 121043433 its reverse (334340121), we get a palindrome (455383554).

The spelling of 121043433 in words is "one hundred twenty-one million, forty-three thousand, four hundred thirty-three".