211011000121 has 2 divisors, whose sum is σ = 211011000122. Its totient is φ = 211011000120.

The previous prime is 211011000017. The next prime is 211011000127. The reversal of 211011000121 is 121000110112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209210186025 + 1800814096 = 457395^2 + 42436^2 .

It is a cyclic number.

It is not a de Polignac number, because 211011000121 - 2³¹ = 208863516473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211011000098 and 211011000107.

It is not a weakly prime, because it can be changed into another prime (211011000127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105505500060 + 105505500061.

It is an arithmetic number, because the mean of its divisors is an integer number (105505500061).

Almost surely, 2^211011000121 is an apocalyptic number.

It is an amenable number.

211011000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

211011000121 is an equidigital number, since it uses as much as digits as its factorization.

211011000121 is an evil number, because the sum of its binary digits is even.

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

Adding to 211011000121 its reverse (121000110112), we get a palindrome (332011110233).

The spelling of 211011000121 in words is "two hundred eleven billion, eleven million, one hundred twenty-one", and thus it is an aban number.