2211220200121 has 2 divisors, whose sum is σ = 2211220200122. Its totient is φ = 2211220200120.

The previous prime is 2211220200073. The next prime is 2211220200131. The reversal of 2211220200121 is 1210020221122.

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., 2186864228025 + 24355972096 = 1478805^2 + 156064^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211220200121 - 2²¹ = 2211218102969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2211220200095 and 2211220200104.

It is not a weakly prime, because it can be changed into another prime (2211220200131) 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, 1105610100060 + 1105610100061.

It is an arithmetic number, because the mean of its divisors is an integer number (1105610100061).

Almost surely, 2^{2211220200121} is an apocalyptic number.

It is an amenable number.

2211220200121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211220200121 is an equidigital number, since it uses as much as digits as its factorization.

2211220200121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211220200121 its reverse (1210020221122), we get a palindrome (3421240421243).

The spelling of 2211220200121 in words is "two trillion, two hundred eleven billion, two hundred twenty million, two hundred thousand, one hundred twenty-one".