20222120243 has 4 divisors (see below), whose sum is σ = 21777667968. Its totient is φ = 18666572520.

The previous prime is 20222120231. The next prime is 20222120263. The reversal of 20222120243 is 34202122202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34202122202 = 2 ⋅17101061101.

It is a cyclic number.

It is not a de Polignac number, because 20222120243 - 2¹⁰ = 20222119219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20222120203) 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, 777773843 + ... + 777773868.

It is an arithmetic number, because the mean of its divisors is an integer number (5444416992).

Almost surely, 2^20222120243 is an apocalyptic number.

20222120243 is a deficient number, since it is larger than the sum of its proper divisors (1555547725).

20222120243 is a wasteful number, since it uses less digits than its factorization.

20222120243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555547724.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20222120243 its reverse (34202122202), we get a palindrome (54424242445).

The spelling of 20222120243 in words is "twenty billion, two hundred twenty-two million, one hundred twenty thousand, two hundred forty-three".