121220010011 has 2 divisors, whose sum is σ = 121220010012. Its totient is φ = 121220010010.

The previous prime is 121220009959. The next prime is 121220010031. The reversal of 121220010011 is 110010022121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220010011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121220009974 and 121220010001.

It is not a weakly prime, because it can be changed into another prime (121220010031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610005005 + 60610005006.

It is an arithmetic number, because the mean of its divisors is an integer number (60610005006).

Almost surely, 2^121220010011 is an apocalyptic number.

121220010011 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220010011 is an equidigital number, since it uses as much as digits as its factorization.

121220010011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121220010011 its reverse (110010022121), we get a palindrome (231230032132).

The spelling of 121220010011 in words is "one hundred twenty-one billion, two hundred twenty million, ten thousand, eleven".