121115411 has 2 divisors, whose sum is σ = 121115412. Its totient is φ = 121115410.

The previous prime is 121115399. The next prime is 121115417. The reversal of 121115411 is 114511121.

It is a strong prime.

It is an emirp because it is prime and its reverse (114511121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121115411 - 2¹⁰ = 121114387 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121115411.

It is not a weakly prime, because it can be changed into another prime (121115417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60557705 + 60557706.

It is an arithmetic number, because the mean of its divisors is an integer number (60557706).

Almost surely, 2^121115411 is an apocalyptic number.

121115411 is a deficient number, since it is larger than the sum of its proper divisors (1).

121115411 is an equidigital number, since it uses as much as digits as its factorization.

121115411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40, while the sum is 17.

The square root of 121115411 is about 11005.2447042308. The cubic root of 121115411 is about 494.7659485963.

Adding to 121115411 its reverse (114511121), we get a palindrome (235626532).

The spelling of 121115411 in words is "one hundred twenty-one million, one hundred fifteen thousand, four hundred eleven".