20123330221111 has 16 divisors (see below), whose sum is σ = 22516461928800. Its totient is φ = 17856533132928.

The previous prime is 20123330221109. The next prime is 20123330221117. The reversal of 20123330221111 is 11112203332102.

It is a cyclic number.

It is not a de Polignac number, because 20123330221111 - 2¹ = 20123330221109 is a prime.

It is a super-4 number, since 4×20123330221111⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123330221117) 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 in 15 ways as a sum of consecutive naturals, for example, 116458501 + ... + 116631166.

It is an arithmetic number, because the mean of its divisors is an integer number (1407278870550).

Almost surely, 2^{20123330221111} is an apocalyptic number.

20123330221111 is a deficient number, since it is larger than the sum of its proper divisors (2393131707689).

20123330221111 is a wasteful number, since it uses less digits than its factorization.

20123330221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233089938.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20123330221111 its reverse (11112203332102), we get a palindrome (31235533553213).

The spelling of 20123330221111 in words is "twenty trillion, one hundred twenty-three billion, three hundred thirty million, two hundred twenty-one thousand, one hundred eleven".