202222111001221 has 8 divisors (see below), whose sum is σ = 202416197518584. Its totient is φ = 202028083857600.

The previous prime is 202222111001219. The next prime is 202222111001249. The reversal of 202222111001221 is 122100111222202.

202222111001221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6347950796196 + 195874160205025 = 2519514^2 + 13995505^2 .

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 202222111001221 - 2¹ = 202222111001219 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 (202222111001291) 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, 8026830 + ... + 21653503.

It is an arithmetic number, because the mean of its divisors is an integer number (25302024689823).

Almost surely, 2^{202222111001221} is an apocalyptic number.

It is an amenable number.

202222111001221 is a deficient number, since it is larger than the sum of its proper divisors (194086517363).

202222111001221 is a wasteful number, since it uses less digits than its factorization.

202222111001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29686871.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 202222111001221 its reverse (122100111222202), we get a palindrome (324322222223423).

The spelling of 202222111001221 in words is "two hundred two trillion, two hundred twenty-two billion, one hundred eleven million, one thousand, two hundred twenty-one".