220222012206121 has 2 divisors, whose sum is σ = 220222012206122. Its totient is φ = 220222012206120.

The previous prime is 220222012206103. The next prime is 220222012206179. The reversal of 220222012206121 is 121602210222022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210387917610025 + 9834094596096 = 14504755^2 + 3135936^2 .

It is a cyclic number.

It is not a de Polignac number, because 220222012206121 - 2³⁹ = 219672256392233 is a prime.

It is a super-2 number, since 2×220222012206121² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220222012506121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110111006103060 + 110111006103061.

It is an arithmetic number, because the mean of its divisors is an integer number (110111006103061).

Almost surely, 2^{220222012206121} is an apocalyptic number.

It is an amenable number.

220222012206121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220222012206121 is an equidigital number, since it uses as much as digits as its factorization.

220222012206121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 220222012206121 its reverse (121602210222022), we get a palindrome (341824222428143).

The spelling of 220222012206121 in words is "two hundred twenty trillion, two hundred twenty-two billion, twelve million, two hundred six thousand, one hundred twenty-one".