223212303440 has 80 divisors (see below), whose sum is σ = 593212984320. Its totient is φ = 76516254720.

The previous prime is 223212303427. The next prime is 223212303553. The reversal of 223212303440 is 44303212322.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×223212303440³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3395201 + ... + 3460319.

It is an arithmetic number, because the mean of its divisors is an integer number (7415162304).

Almost surely, 2^223212303440 is an apocalyptic number.

223212303440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223212303440 is an abundant number, since it is smaller than the sum of its proper divisors (370000680880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223212303440 is a wasteful number, since it uses less digits than its factorization.

223212303440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71260 (or 71254 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 223212303440 its reverse (44303212322), we get a palindrome (267515515762).

The spelling of 223212303440 in words is "two hundred twenty-three billion, two hundred twelve million, three hundred three thousand, four hundred forty".