121200011011 has 2 divisors, whose sum is σ = 121200011012. Its totient is φ = 121200011010.

The previous prime is 121200011003. The next prime is 121200011041. The reversal of 121200011011 is 110110002121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121200011011 - 2³ = 121200011003 is a prime.

It is not a weakly prime, because it can be changed into another prime (121200011041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60600005505 + 60600005506.

It is an arithmetic number, because the mean of its divisors is an integer number (60600005506).

Almost surely, 2^121200011011 is an apocalyptic number.

121200011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121200011011 is an equidigital number, since it uses as much as digits as its factorization.

121200011011 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 121200011011 its reverse (110110002121), we get a palindrome (231310013132).

The spelling of 121200011011 in words is "one hundred twenty-one billion, two hundred million, eleven thousand, eleven".