23221220144243 has 24 divisors (see below), whose sum is σ = 27353731935264. Its totient is φ = 19646625651840.

The previous prime is 23221220144233. The next prime is 23221220144273. The reversal of 23221220144243 is 34244102212232.

It is not a de Polignac number, because 23221220144243 - 2⁶ = 23221220144179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23221220144233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112653146 + ... + 112859087.

It is an arithmetic number, because the mean of its divisors is an integer number (1139738830636).

Almost surely, 2^{23221220144243} is an apocalyptic number.

23221220144243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23221220144243 is a deficient number, since it is larger than the sum of its proper divisors (4132511791021).

23221220144243 is a wasteful number, since it uses less digits than its factorization.

23221220144243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225512315 (or 225512304 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 23221220144243 its reverse (34244102212232), we get a palindrome (57465322356475).

The spelling of 23221220144243 in words is "twenty-three trillion, two hundred twenty-one billion, two hundred twenty million, one hundred forty-four thousand, two hundred forty-three".