121206011 has 2 divisors, whose sum is σ = 121206012. Its totient is φ = 121206010.

The previous prime is 121205999. The next prime is 121206013. The reversal of 121206011 is 110602121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121206011 - 2²² = 117011707 is a prime.

Together with 121206013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121206013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60603005 + 60603006.

It is an arithmetic number, because the mean of its divisors is an integer number (60603006).

Almost surely, 2^121206011 is an apocalyptic number.

121206011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121206011 is an equidigital number, since it uses as much as digits as its factorization.

121206011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 121206011 is about 11009.3601539781. The cubic root of 121206011 is about 494.8892872146.

Adding to 121206011 its reverse (110602121), we get a palindrome (231808132).

The spelling of 121206011 in words is "one hundred twenty-one million, two hundred six thousand, eleven".