223121002 has 8 divisors (see below), whose sum is σ = 360426276. Its totient is φ = 102978912.

The previous prime is 223120991. The next prime is 223121011. The reversal of 223121002 is 200121322.

223121002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 173686041 + 49434961 = 13179^2 + 7031^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×223121002³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 4290763 + ... + 4290814.

Almost surely, 2^223121002 is an apocalyptic number.

223121002 is a deficient number, since it is larger than the sum of its proper divisors (137305274).

223121002 is a wasteful number, since it uses less digits than its factorization.

223121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8581592.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 223121002 is about 14937.2354202510. The cubic root of 223121002 is about 606.5223614563.

Adding to 223121002 its reverse (200121322), we get a palindrome (423242324).

The spelling of 223121002 in words is "two hundred twenty-three million, one hundred twenty-one thousand, two".