202121220223 has 8 divisors (see below), whose sum is σ = 217673288000. Its totient is φ = 186569764128.

The previous prime is 202121220209. The next prime is 202121220227. The reversal of 202121220223 is 322022121202.

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

It is a cyclic number.

It is not a de Polignac number, because 202121220223 - 2²¹ = 202119123071 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202121220223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121220227) 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, 716473 + ... + 957901.

It is an arithmetic number, because the mean of its divisors is an integer number (27209161000).

Almost surely, 2^202121220223 is an apocalyptic number.

202121220223 is a deficient number, since it is larger than the sum of its proper divisors (15552067777).

202121220223 is a wasteful number, since it uses less digits than its factorization.

202121220223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305841.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 202121220223 its reverse (322022121202), we get a palindrome (524143341425).

The spelling of 202121220223 in words is "two hundred two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred twenty-three".