223330212121 has 12 divisors (see below), whose sum is σ = 230798148132. Its totient is φ = 216096660000.

The previous prime is 223330212097. The next prime is 223330212139. The reversal of 223330212121 is 121212033322.

It can be written as a sum of positive squares in 2 ways, for example, as 70761852121 + 152568360000 = 266011^2 + 390600^2 .

It is not a de Polignac number, because 223330212121 - 2²⁷ = 223195994393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223330212092 and 223330212101.

It is not an unprimeable number, because it can be changed into a prime (223330212421) 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, 11234731 + ... + 11254591.

It is an arithmetic number, because the mean of its divisors is an integer number (19233179011).

Almost surely, 2^223330212121 is an apocalyptic number.

It is an amenable number.

223330212121 is a deficient number, since it is larger than the sum of its proper divisors (7467936011).

223330212121 is a wasteful number, since it uses less digits than its factorization.

223330212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31624 (or 31593 counting only the distinct ones).

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

Adding to 223330212121 its reverse (121212033322), we get a palindrome (344542245443).

The spelling of 223330212121 in words is "two hundred twenty-three billion, three hundred thirty million, two hundred twelve thousand, one hundred twenty-one".