223012312100 has 54 divisors (see below), whose sum is σ = 514078171110. Its totient is φ = 83957565440.

The previous prime is 223012312099. The next prime is 223012312153. The reversal of 223012312100 is 1213210322.

It can be written as a sum of positive squares in 9 ways, for example, as 28924485184 + 194087826916 = 170072^2 + 440554^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3829445 + ... + 3887244.

Almost surely, 2^223012312100 is an apocalyptic number.

223012312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223012312100 is an abundant number, since it is smaller than the sum of its proper divisors (291065859010).

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

223012312100 is a wasteful number, since it uses less digits than its factorization.

223012312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7716737 (or 7716713 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 223012312100 its reverse (1213210322), we get a palindrome (224225522422).

The spelling of 223012312100 in words is "two hundred twenty-three billion, twelve million, three hundred twelve thousand, one hundred".