202222002111221 has 2 divisors, whose sum is σ = 202222002111222. Its totient is φ = 202222002111220.

The previous prime is 202222002111193. The next prime is 202222002111377. The reversal of 202222002111221 is 122111200222202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104313233158225 + 97908768952996 = 10213385^2 + 9894886^2 .

It is a cyclic number.

It is not a de Polignac number, because 202222002111221 - 2¹⁰ = 202222002110197 is a prime.

It is a super-2 number, since 2×202222002111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202222002111193 and 202222002111202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202222002116221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101111001055610 + 101111001055611.

It is an arithmetic number, because the mean of its divisors is an integer number (101111001055611).

Almost surely, 2^{202222002111221} is an apocalyptic number.

It is an amenable number.

202222002111221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202222002111221 is an equidigital number, since it uses as much as digits as its factorization.

202222002111221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 202222002111221 its reverse (122111200222202), we get a palindrome (324333202333423).

The spelling of 202222002111221 in words is "two hundred two trillion, two hundred twenty-two billion, two million, one hundred eleven thousand, two hundred twenty-one".