211120121011 has 2 divisors, whose sum is σ = 211120121012. Its totient is φ = 211120121010.

The previous prime is 211120120993. The next prime is 211120121057. The reversal of 211120121011 is 110121021112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211120121011 - 2⁹ = 211120120499 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211120120982 and 211120121000.

It is not a weakly prime, because it can be changed into another prime (211120121071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560060505 + 105560060506.

It is an arithmetic number, because the mean of its divisors is an integer number (105560060506).

Almost surely, 2^211120121011 is an apocalyptic number.

211120121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120121011 is an equidigital number, since it uses as much as digits as its factorization.

211120121011 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 211120121011 its reverse (110121021112), we get a palindrome (321241142123).

The spelling of 211120121011 in words is "two hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, eleven".