2200221212221 has 2 divisors, whose sum is σ = 2200221212222. Its totient is φ = 2200221212220.

The previous prime is 2200221212191. The next prime is 2200221212243. The reversal of 2200221212221 is 1222121220022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1434578712121 + 765642500100 = 1197739^2 + 875010^2 .

It is a cyclic number.

It is not a de Polignac number, because 2200221212221 - 2⁷ = 2200221212093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2200221212821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100110606110 + 1100110606111.

It is an arithmetic number, because the mean of its divisors is an integer number (1100110606111).

Almost surely, 2^{2200221212221} is an apocalyptic number.

It is an amenable number.

2200221212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2200221212221 is an equidigital number, since it uses as much as digits as its factorization.

2200221212221 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 19.

Adding to 2200221212221 its reverse (1222121220022), we get a palindrome (3422342432243).

The spelling of 2200221212221 in words is "two trillion, two hundred billion, two hundred twenty-one million, two hundred twelve thousand, two hundred twenty-one".