223213524500 has 48 divisors (see below), whose sum is σ = 491970919440. Its totient is φ = 88466256000.

The previous prime is 223213524493. The next prime is 223213524509. The reversal of 223213524500 is 5425312322.

It can be written as a sum of positive squares in 8 ways, for example, as 41970897424 + 181242627076 = 204868^2 + 425726^2 .

It is a super-3 number, since 3×223213524500³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223213524509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1993331 + ... + 2102330.

It is an arithmetic number, because the mean of its divisors is an integer number (10249394155).

Almost surely, 2^223213524500 is an apocalyptic number.

223213524500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223213524500 is an abundant number, since it is smaller than the sum of its proper divisors (268757394940).

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

223213524500 is a wasteful number, since it uses less digits than its factorization.

223213524500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095789 (or 4095777 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 223213524500 its reverse (5425312322), we get a palindrome (228638836822).

The spelling of 223213524500 in words is "two hundred twenty-three billion, two hundred thirteen million, five hundred twenty-four thousand, five hundred".