202212011221 has 8 divisors (see below), whose sum is σ = 222779030688. Its totient is φ = 182009010000.

The previous prime is 202212011201. The next prime is 202212011233. The reversal of 202212011221 is 122110212202.

It is a happy number.

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 202212011221 - 2²⁵ = 202178456789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202212011195 and 202212011204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202212011201) 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, 91003395 + ... + 91005616.

It is an arithmetic number, because the mean of its divisors is an integer number (27847378836).

Almost surely, 2^202212011221 is an apocalyptic number.

It is an amenable number.

202212011221 is a deficient number, since it is larger than the sum of its proper divisors (20567019467).

202212011221 is a wasteful number, since it uses less digits than its factorization.

202212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182009123.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202212011221 its reverse (122110212202), we get a palindrome (324322223423).

The spelling of 202212011221 in words is "two hundred two billion, two hundred twelve million, eleven thousand, two hundred twenty-one".