120121121011 has 2 divisors, whose sum is σ = 120121121012.
Its totient is φ = 120121121010.
The previous prime is 120121120979. The next prime is 120121121017. The reversal of 120121121011 is 110121121021.
It is a happy number.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 120121121011 - 25 = 120121120979 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 120121120982 and 120121121000.
It is not a weakly prime, because it can be changed into another prime (120121121017) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060560505 + 60060560506.
It is an arithmetic number, because the mean of its divisors is an integer number (60060560506).
Almost surely, 2120121121011 is an apocalyptic number.
120121121011 is a deficient number, since it is larger than the sum of its proper divisors (1).
120121121011 is an equidigital number, since it uses as much as digits as its factorization.
120121121011 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 120121121011 its reverse (110121121021), we get a palindrome (230242242032).
The spelling of 120121121011 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-one thousand, eleven".