20011120978333 has 2 divisors, whose sum is σ = 20011120978334. Its totient is φ = 20011120978332.

The previous prime is 20011120978309. The next prime is 20011120978363. The reversal of 20011120978333 is 33387902111002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11841430735044 + 8169690243289 = 3441138^2 + 2858267^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011120978333 - 2³³ = 20002531043741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011120978363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005560489166 + 10005560489167.

It is an arithmetic number, because the mean of its divisors is an integer number (10005560489167).

Almost surely, 2^{20011120978333} is an apocalyptic number.

It is an amenable number.

20011120978333 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011120978333 is an equidigital number, since it uses as much as digits as its factorization.

20011120978333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 20011120978333 in words is "twenty trillion, eleven billion, one hundred twenty million, nine hundred seventy-eight thousand, three hundred thirty-three".