223440120251 has 32 divisors (see below), whose sum is σ = 249647354880. Its totient is φ = 198999504000.

The previous prime is 223440120227. The next prime is 223440120269. The reversal of 223440120251 is 152021044322.

It is a cyclic number.

It is not a de Polignac number, because 223440120251 - 2¹⁸ = 223439858107 is a prime.

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 223440120251.

It is not an unprimeable number, because it can be changed into a prime (223440123251) 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 31 ways as a sum of consecutive naturals, for example, 45127826 + ... + 45132776.

It is an arithmetic number, because the mean of its divisors is an integer number (7801479840).

Almost surely, 2^223440120251 is an apocalyptic number.

223440120251 is a deficient number, since it is larger than the sum of its proper divisors (26207234629).

223440120251 is a wasteful number, since it uses less digits than its factorization.

223440120251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6747.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 223440120251 its reverse (152021044322), we get a palindrome (375461164573).

The spelling of 223440120251 in words is "two hundred twenty-three billion, four hundred forty million, one hundred twenty thousand, two hundred fifty-one".