1000001121211 has 2 divisors, whose sum is σ = 1000001121212. Its totient is φ = 1000001121210.

The previous prime is 1000001121179. The next prime is 1000001121257. The reversal of 1000001121211 is 1121211000001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000001121211 - 2⁵ = 1000001121179 is a prime.

It is a super-2 number, since 2×1000001121211² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1000001121311) 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, 500000560605 + 500000560606.

It is an arithmetic number, because the mean of its divisors is an integer number (500000560606).

Almost surely, 2^{1000001121211} is an apocalyptic number.

1000001121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000001121211 is an equidigital number, since it uses as much as digits as its factorization.

1000001121211 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 1000001121211 its reverse (1121211000001), we get a palindrome (2121212121212).

The spelling of 1000001121211 in words is "one trillion, one million, one hundred twenty-one thousand, two hundred eleven".