120121011011 has 2 divisors, whose sum is σ = 120121011012. Its totient is φ = 120121011010.

The previous prime is 120121010959. The next prime is 120121011077. The reversal of 120121011011 is 110110121021.

It is a weak prime.

It is an emirp because it is prime and its reverse (110110121021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120121011011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120121010983 and 120121011001.

It is not a weakly prime, because it can be changed into another prime (120121013011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060505505 + 60060505506.

It is an arithmetic number, because the mean of its divisors is an integer number (60060505506).

Almost surely, 2^120121011011 is an apocalyptic number.

120121011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121011011 is an equidigital number, since it uses as much as digits as its factorization.

120121011011 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 11.

Adding to 120121011011 its reverse (110110121021), we get a palindrome (230231132032).

The spelling of 120121011011 in words is "one hundred twenty billion, one hundred twenty-one million, eleven thousand, eleven".