10001022111121 has 2 divisors, whose sum is σ = 10001022111122. Its totient is φ = 10001022111120.

The previous prime is 10001022111079. The next prime is 10001022111139. The reversal of 10001022111121 is 12111122010001.

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., 10001001454096 + 20657025 = 3162436^2 + 4545^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001022111121 - 2⁷ = 10001022110993 is a prime.

It is a super-2 number, since 2×10001022111121² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10001022111721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000511055560 + 5000511055561.

It is an arithmetic number, because the mean of its divisors is an integer number (5000511055561).

Almost surely, 2^{10001022111121} is an apocalyptic number.

It is an amenable number.

10001022111121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001022111121 is an equidigital number, since it uses as much as digits as its factorization.

10001022111121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 10001022111121 its reverse (12111122010001), we get a palindrome (22112144121122).

The spelling of 10001022111121 in words is "ten trillion, one billion, twenty-two million, one hundred eleven thousand, one hundred twenty-one".