10211121001 has 2 divisors, whose sum is σ = 10211121002. Its totient is φ = 10211121000.

The previous prime is 10211120911. The next prime is 10211121023. The reversal of 10211121001 is 10012111201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6694512400 + 3516608601 = 81820^2 + 59301^2 .

It is an emirp because it is prime and its reverse (10012111201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10211121001 - 2⁹ = 10211120489 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211121301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105560500 + 5105560501.

It is an arithmetic number, because the mean of its divisors is an integer number (5105560501).

Almost surely, 2^10211121001 is an apocalyptic number.

It is an amenable number.

10211121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211121001 is an equidigital number, since it uses as much as digits as its factorization.

10211121001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 10211121001 its reverse (10012111201), we get a palindrome (20223232202).

The spelling of 10211121001 in words is "ten billion, two hundred eleven million, one hundred twenty-one thousand, one".