20111330021323 has 64 divisors (see below), whose sum is σ = 23166657331200. Its totient is φ = 17346698772480.

The previous prime is 20111330021317. The next prime is 20111330021329. The reversal of 20111330021323 is 32312003311102.

It is an interprime number because it is at equal distance from previous prime (20111330021317) and next prime (20111330021329).

It is a de Polignac number, because none of the positive numbers 2^k-20111330021323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20111330021294 and 20111330021303.

It is not an unprimeable number, because it can be changed into a prime (20111330021329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 501146923 + ... + 501187051.

It is an arithmetic number, because the mean of its divisors is an integer number (361979020800).

Almost surely, 2^{20111330021323} is an apocalyptic number.

20111330021323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20111330021323 is a deficient number, since it is larger than the sum of its proper divisors (3055327309877).

20111330021323 is a wasteful number, since it uses less digits than its factorization.

20111330021323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40612.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20111330021323 its reverse (32312003311102), we get a palindrome (52423333332425).

The spelling of 20111330021323 in words is "twenty trillion, one hundred eleven billion, three hundred thirty million, twenty-one thousand, three hundred twenty-three".