254123212223 has 4 divisors (see below), whose sum is σ = 262886081640. Its totient is φ = 245360342808.

The previous prime is 254123212201. The next prime is 254123212237. The reversal of 254123212223 is 322212321452.

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 254123212223 - 2¹⁴ = 254123195839 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 8762869387 = 254123212223 / (2 + 5 + 4 + 1 + 2 + 3 + 2 + 1 + 2 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254123212243) 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, 4381434665 + ... + 4381434722.

It is an arithmetic number, because the mean of its divisors is an integer number (65721520410).

Almost surely, 2^254123212223 is an apocalyptic number.

254123212223 is a deficient number, since it is larger than the sum of its proper divisors (8762869417).

254123212223 is an equidigital number, since it uses as much as digits as its factorization.

254123212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8762869416.

The product of its digits is 11520, while the sum is 29.

Adding to 254123212223 its reverse (322212321452), we get a palindrome (576335533675).

The spelling of 254123212223 in words is "two hundred fifty-four billion, one hundred twenty-three million, two hundred twelve thousand, two hundred twenty-three".