2201021011121 has 2 divisors, whose sum is σ = 2201021011122. Its totient is φ = 2201021011120.

The previous prime is 2201021011099. The next prime is 2201021011297. The reversal of 2201021011121 is 1211101201022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2162473186225 + 38547824896 = 1470535^2 + 196336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2201021011121 is a prime.

It is a super-2 number, since 2×2201021011121² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2201021011096 and 2201021011105.

It is not a weakly prime, because it can be changed into another prime (2201021011421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100510505560 + 1100510505561.

It is an arithmetic number, because the mean of its divisors is an integer number (1100510505561).

Almost surely, 2^{2201021011121} is an apocalyptic number.

It is an amenable number.

2201021011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201021011121 is an equidigital number, since it uses as much as digits as its factorization.

2201021011121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2201021011121 its reverse (1211101201022), we get a palindrome (3412122212143).

The spelling of 2201021011121 in words is "two trillion, two hundred one billion, twenty-one million, eleven thousand, one hundred twenty-one".