202220112211221 has 24 divisors (see below), whose sum is σ = 291975785281056. Its totient is φ = 124437596587200.

The previous prime is 202220112211171. The next prime is 202220112211259. The reversal of 202220112211221 is 122112211022202.

It is not a de Polignac number, because 202220112211221 - 2¹¹ = 202220112209173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220112211021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2501646 + ... + 20265696.

It is an arithmetic number, because the mean of its divisors is an integer number (12165657720044).

Almost surely, 2^{202220112211221} is an apocalyptic number.

It is an amenable number.

202220112211221 is a deficient number, since it is larger than the sum of its proper divisors (89755673069835).

202220112211221 is a wasteful number, since it uses less digits than its factorization.

202220112211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17786533 (or 17786520 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 202220112211221 its reverse (122112211022202), we get a palindrome (324332323233423).

The spelling of 202220112211221 in words is "two hundred two trillion, two hundred twenty billion, one hundred twelve million, two hundred eleven thousand, two hundred twenty-one".