22212102033221 has 2 divisors, whose sum is σ = 22212102033222. Its totient is φ = 22212102033220.

The previous prime is 22212102033197. The next prime is 22212102033239. The reversal of 22212102033221 is 12233020121222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15781749390625 + 6430352642596 = 3972625^2 + 2535814^2 .

It is a cyclic number.

It is not a de Polignac number, because 22212102033221 - 2¹⁴ = 22212102016837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22212102036221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11106051016610 + 11106051016611.

It is an arithmetic number, because the mean of its divisors is an integer number (11106051016611).

Almost surely, 2^{22212102033221} is an apocalyptic number.

It is an amenable number.

22212102033221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22212102033221 is an equidigital number, since it uses as much as digits as its factorization.

22212102033221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 22212102033221 its reverse (12233020121222), we get a palindrome (34445122154443).

The spelling of 22212102033221 in words is "twenty-two trillion, two hundred twelve billion, one hundred two million, thirty-three thousand, two hundred twenty-one".