223202121221 has 8 divisors (see below), whose sum is σ = 225425386560. Its totient is φ = 220989269952.

The previous prime is 223202121199. The next prime is 223202121223. The reversal of 223202121221 is 122121202322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223202121221 is a prime.

It is a super-3 number, since 3×223202121221³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223202121193 and 223202121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223202121223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560436 + ... + 2646173.

It is an arithmetic number, because the mean of its divisors is an integer number (28178173320).

Almost surely, 2^223202121221 is an apocalyptic number.

It is an amenable number.

223202121221 is a deficient number, since it is larger than the sum of its proper divisors (2223265339).

223202121221 is a wasteful number, since it uses less digits than its factorization.

223202121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5207035.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 223202121221 its reverse (122121202322), we get a palindrome (345323323543).

The spelling of 223202121221 in words is "two hundred twenty-three billion, two hundred two million, one hundred twenty-one thousand, two hundred twenty-one".