20122311023 has 4 divisors (see below), whose sum is σ = 20128010088. Its totient is φ = 20116611960.

The previous prime is 20122310849. The next prime is 20122311031. The reversal of 20122311023 is 32011322102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32011322102 = 2 ⋅16005661051.

It is a cyclic number.

It is not a de Polignac number, because 20122311023 - 2¹² = 20122306927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122310992 and 20122311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122319023) 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 3 ways as a sum of consecutive naturals, for example, 2844233 + ... + 2851298.

It is an arithmetic number, because the mean of its divisors is an integer number (5032002522).

Almost surely, 2^20122311023 is an apocalyptic number.

20122311023 is a deficient number, since it is larger than the sum of its proper divisors (5699065).

20122311023 is an equidigital number, since it uses as much as digits as its factorization.

20122311023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5699064.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20122311023 its reverse (32011322102), we get a palindrome (52133633125).

The spelling of 20122311023 in words is "twenty billion, one hundred twenty-two million, three hundred eleven thousand, twenty-three".