223131101223121 has 12 divisors (see below), whose sum is σ = 279526874060532. Its totient is φ = 176543288879328.

The previous prime is 223131101223011. The next prime is 223131101223187. The reversal of 223131101223121 is 121322101131322.

223131101223121 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 94480246809025 + 128650854414096 = 9720095^2 + 11342436^2 .

It is not a de Polignac number, because 223131101223121 - 2¹³ = 223131101214929 is a prime.

It is a super-3 number, since 3×223131101223121³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223131101224121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175142151030 + ... + 175142152303.

It is an arithmetic number, because the mean of its divisors is an integer number (23293906171711).

Almost surely, 2^{223131101223121} is an apocalyptic number.

It is an amenable number.

223131101223121 is a deficient number, since it is larger than the sum of its proper divisors (56395772837411).

223131101223121 is a wasteful number, since it uses less digits than its factorization.

223131101223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350284303360 (or 350284303353 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 223131101223121 its reverse (121322101131322), we get a palindrome (344453202354443).

The spelling of 223131101223121 in words is "two hundred twenty-three trillion, one hundred thirty-one billion, one hundred one million, two hundred twenty-three thousand, one hundred twenty-one".