20211111323403 has 192 divisors, whose sum is σ = 37757657613312. Its totient is φ = 9286012800000.

The previous prime is 20211111323393. The next prime is 20211111323407. The reversal of 20211111323403 is 30432311111202.

It is not a de Polignac number, because 20211111323403 - 2⁶ = 20211111323339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211111323407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 291439513 + ... + 291508853.

It is an arithmetic number, because the mean of its divisors is an integer number (196654466736).

Almost surely, 2^{20211111323403} is an apocalyptic number.

20211111323403 is a deficient number, since it is larger than the sum of its proper divisors (17546546289909).

20211111323403 is a wasteful number, since it uses less digits than its factorization.

20211111323403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69538 (or 69507 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 20211111323403 its reverse (30432311111202), we get a palindrome (50643422434605).

The spelling of 20211111323403 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, three hundred twenty-three thousand, four hundred three".