202113223 has 16 divisors (see below), whose sum is σ = 220572576. Its totient is φ = 184089600.

The previous prime is 202113199. The next prime is 202113257. The reversal of 202113223 is 322311202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202113223 is a prime.

It is a super-2 number, since 2×202113223² = 81699509822895458, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 202113197 and 202113206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202113293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503823 + ... + 504223.

It is an arithmetic number, because the mean of its divisors is an integer number (13785786).

Almost surely, 2^202113223 is an apocalyptic number.

202113223 is a deficient number, since it is larger than the sum of its proper divisors (18459353).

202113223 is a wasteful number, since it uses less digits than its factorization.

202113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 202113223 is about 14216.6530167969. The cubic root of 202113223 is about 586.8560360965.

Adding to 202113223 its reverse (322311202), we get a palindrome (524424425).

The spelling of 202113223 in words is "two hundred two million, one hundred thirteen thousand, two hundred twenty-three".