223155020012240 has 20 divisors (see below), whose sum is σ = 518835421528644. Its totient is φ = 89262008004864.

The previous prime is 223155020012203. The next prime is 223155020012279. The reversal of 223155020012240 is 42210020551322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 102304485826624 + 120850534185616 = 10114568^2 + 10993204^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×223155020012240³ (a number of 44 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 3 ways as a sum of consecutive naturals, for example, 1394718874997 + ... + 1394718875156.

Almost surely, 2^{223155020012240} is an apocalyptic number.

223155020012240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223155020012240 is an abundant number, since it is smaller than the sum of its proper divisors (295680401516404).

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

223155020012240 is a wasteful number, since it uses less digits than its factorization.

223155020012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789437750166 (or 2789437750160 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 223155020012240 its reverse (42210020551322), we get a palindrome (265365040563562).

The spelling of 223155020012240 in words is "two hundred twenty-three trillion, one hundred fifty-five billion, twenty million, twelve thousand, two hundred forty".