202220111221221 has 8 divisors (see below), whose sum is σ = 269627121883744. Its totient is φ = 134813254019760.

The previous prime is 202220111221201. The next prime is 202220111221259. The reversal of 202220111221221 is 122122111022202.

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

It is not a de Polignac number, because 202220111221221 - 2²¹ = 202220109124069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202220111221201) 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, 35254531 + ... + 40587216.

It is an arithmetic number, because the mean of its divisors is an integer number (33703390235468).

Almost surely, 2^{202220111221221} is an apocalyptic number.

It is an amenable number.

202220111221221 is a deficient number, since it is larger than the sum of its proper divisors (67407010662523).

202220111221221 is an equidigital number, since it uses as much as digits as its factorization.

202220111221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76730531.

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

Adding to 202220111221221 its reverse (122122111022202), we get a palindrome (324342222243423).

The spelling of 202220111221221 in words is "two hundred two trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty-one".