20210122200223 has 4 divisors (see below), whose sum is σ = 21273812842360. Its totient is φ = 19146431558088.

The previous prime is 20210122200211. The next prime is 20210122200241. The reversal of 20210122200223 is 32200222101202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20210122200223 - 2³⁷ = 20072683246751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1063690642117 = 20210122200223 / (2 + 0 + 2 + 1 + 0 + 1 + 2 + 2 + 2 + 0 + 0 + 2 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20210122200223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210122206223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531845321040 + ... + 531845321077.

It is an arithmetic number, because the mean of its divisors is an integer number (5318453210590).

Almost surely, 2^{20210122200223} is an apocalyptic number.

20210122200223 is a deficient number, since it is larger than the sum of its proper divisors (1063690642137).

20210122200223 is a wasteful number, since it uses less digits than its factorization.

20210122200223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063690642136.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20210122200223 its reverse (32200222101202), we get a palindrome (52410344301425).

The spelling of 20210122200223 in words is "twenty trillion, two hundred ten billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-three".