20012221110123 has 16 divisors (see below), whose sum is σ = 32342983612800. Its totient is φ = 12128618854440.

The previous prime is 20012221110107. The next prime is 20012221110191. The reversal of 20012221110123 is 32101112221002.

20012221110123 is a `hidden beast` number, since 200 + 12 + 221 + 110 + 123 = 666.

It is not a de Polignac number, because 20012221110123 - 2⁴ = 20012221110107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20012221110096 and 20012221110105.

It is not an unprimeable number, because it can be changed into a prime (20012221115123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33690607633 + ... + 33690608226.

It is an arithmetic number, because the mean of its divisors is an integer number (2021436475800).

Almost surely, 2^{20012221110123} is an apocalyptic number.

20012221110123 is a deficient number, since it is larger than the sum of its proper divisors (12330762502677).

20012221110123 is a wasteful number, since it uses less digits than its factorization.

20012221110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67381215879 (or 67381215873 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20012221110123 its reverse (32101112221002), we get a palindrome (52113333331125).

The spelling of 20012221110123 in words is "twenty trillion, twelve billion, two hundred twenty-one million, one hundred ten thousand, one hundred twenty-three".