20112220223123 has 16 divisors (see below), whose sum is σ = 23251732992000. Its totient is φ = 17039426661312.

The previous prime is 20112220223083. The next prime is 20112220223141. The reversal of 20112220223123 is 32132202221102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20112220223123 - 2⁸ = 20112220222867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112220223723) 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, 3812993 + ... + 7400226.

It is an arithmetic number, because the mean of its divisors is an integer number (1453233312000).

Almost surely, 2^{20112220223123} is an apocalyptic number.

20112220223123 is a deficient number, since it is larger than the sum of its proper divisors (3139512768877).

20112220223123 is a wasteful number, since it uses less digits than its factorization.

20112220223123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11216194.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20112220223123 its reverse (32132202221102), we get a palindrome (52244422444225).

The spelling of 20112220223123 in words is "twenty trillion, one hundred twelve billion, two hundred twenty million, two hundred twenty-three thousand, one hundred twenty-three".