121113211 has 2 divisors, whose sum is σ = 121113212. Its totient is φ = 121113210.

The previous prime is 121113203. The next prime is 121113217. The reversal of 121113211 is 112311121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121113211 - 2³ = 121113203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121113191 and 121113200.

It is not a weakly prime, because it can be changed into another prime (121113217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556605 + 60556606.

It is an arithmetic number, because the mean of its divisors is an integer number (60556606).

Almost surely, 2^121113211 is an apocalyptic number.

121113211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121113211 is an equidigital number, since it uses as much as digits as its factorization.

121113211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12, while the sum is 13.

The square root of 121113211 is about 11005.1447514333. The cubic root of 121113211 is about 494.7629528540.

Adding to 121113211 its reverse (112311121), we get a palindrome (233424332).

The spelling of 121113211 in words is "one hundred twenty-one million, one hundred thirteen thousand, two hundred eleven".