1010211121121 has 2 divisors, whose sum is σ = 1010211121122. Its totient is φ = 1010211121120.

The previous prime is 1010211121099. The next prime is 1010211121159. The reversal of 1010211121121 is 1211211120101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877397523025 + 132813598096 = 936695^2 + 364436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010211121121 - 2⁶ = 1010211121057 is a prime.

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 = 1010211121096 and 1010211121105.

It is not a weakly prime, because it can be changed into another prime (1010211121181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505105560560 + 505105560561.

It is an arithmetic number, because the mean of its divisors is an integer number (505105560561).

Almost surely, 2^{1010211121121} is an apocalyptic number.

It is an amenable number.

1010211121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010211121121 is an equidigital number, since it uses as much as digits as its factorization.

1010211121121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1010211121121 its reverse (1211211120101), we get a palindrome (2221422241222).

The spelling of 1010211121121 in words is "one trillion, ten billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-one".