20211310223 has 4 divisors (see below), whose sum is σ = 21766026408. Its totient is φ = 18656594040.

The previous prime is 20211310213. The next prime is 20211310337. The reversal of 20211310223 is 32201311202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32201311202 = 2 ⋅16100655601.

It is a cyclic number.

It is not a de Polignac number, because 20211310223 - 2⁶ = 20211310159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211310213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 777358073 + ... + 777358098.

It is an arithmetic number, because the mean of its divisors is an integer number (5441506602).

Almost surely, 2^20211310223 is an apocalyptic number.

20211310223 is a deficient number, since it is larger than the sum of its proper divisors (1554716185).

20211310223 is a wasteful number, since it uses less digits than its factorization.

20211310223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554716184.

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

Adding to 20211310223 its reverse (32201311202), we get a palindrome (52412621425).

The spelling of 20211310223 in words is "twenty billion, two hundred eleven million, three hundred ten thousand, two hundred twenty-three".