220201120222121 has 2 divisors, whose sum is σ = 220201120222122. Its totient is φ = 220201120222120.

The previous prime is 220201120222081. The next prime is 220201120222133. The reversal of 220201120222121 is 121222021102022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125253343088896 + 94947777133225 = 11191664^2 + 9744115^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201120222121 - 2²² = 220201116027817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220201120222093 and 220201120222102.

It is not a weakly prime, because it can be changed into another prime (220201120222021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100560111060 + 110100560111061.

It is an arithmetic number, because the mean of its divisors is an integer number (110100560111061).

Almost surely, 2^{220201120222121} is an apocalyptic number.

It is an amenable number.

220201120222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201120222121 is an equidigital number, since it uses as much as digits as its factorization.

220201120222121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 220201120222121 its reverse (121222021102022), we get a palindrome (341423141324143).

The spelling of 220201120222121 in words is "two hundred twenty trillion, two hundred one billion, one hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".