20031033221099 has 2 divisors, whose sum is σ = 20031033221100. Its totient is φ = 20031033221098.

The previous prime is 20031033221077. The next prime is 20031033221113. The reversal of 20031033221099 is 99012233013002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20031033221099 - 2²⁴ = 20031016443883 is a prime.

It is not a weakly prime, because it can be changed into another prime (20031033227099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015516610549 + 10015516610550.

It is an arithmetic number, because the mean of its divisors is an integer number (10015516610550).

Almost surely, 2^{20031033221099} is an apocalyptic number.

20031033221099 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031033221099 is an equidigital number, since it uses as much as digits as its factorization.

20031033221099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 20031033221099 in words is "twenty trillion, thirty-one billion, thirty-three million, two hundred twenty-one thousand, ninety-nine".