223121223130 has 96 divisors (see below), whose sum is σ = 457005982608. Its totient is φ = 77956300800.

The previous prime is 223121223107. The next prime is 223121223209. The reversal of 223121223130 is 31322121322.

It can be written as a sum of positive squares in 8 ways, for example, as 103924351129 + 119196872001 = 322373^2 + 345249^2 .

It is a super-3 number, since 3×223121223130³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49790490 + ... + 49794970.

Almost surely, 2^223121223130 is an apocalyptic number.

223121223130 is an abundant number, since it is smaller than the sum of its proper divisors (233884759478).

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

223121223130 is a wasteful number, since it uses less digits than its factorization.

223121223130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5581 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 223121223130 its reverse (31322121322), we get a palindrome (254443344452).

The spelling of 223121223130 in words is "two hundred twenty-three billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred thirty".