433121221021 has 12 divisors (see below), whose sum is σ = 451974797532. Its totient is φ = 414999480000.

The previous prime is 433121220953. The next prime is 433121221031. The reversal of 433121221021 is 120122121334.

It can be written as a sum of positive squares in 2 ways, for example, as 387288405625 + 45832815396 = 622325^2 + 214086^2 .

It is not a de Polignac number, because 433121221021 - 2⁷ = 433121220893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 433121220983 and 433121221001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (433121221031) 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, 2134120 + ... + 2328241.

It is an arithmetic number, because the mean of its divisors is an integer number (37664566461).

Almost surely, 2^433121221021 is an apocalyptic number.

It is an amenable number.

433121221021 is a deficient number, since it is larger than the sum of its proper divisors (18853576511).

433121221021 is a wasteful number, since it uses less digits than its factorization.

433121221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4462524 (or 4462493 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 433121221021 its reverse (120122121334), we get a palindrome (553243342355).

The spelling of 433121221021 in words is "four hundred thirty-three billion, one hundred twenty-one million, two hundred twenty-one thousand, twenty-one".