121136411 has 4 divisors (see below), whose sum is σ = 132148824. Its totient is φ = 110124000.

The previous prime is 121136399. The next prime is 121136453. The reversal of 121136411 is 114631121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121136411 - 2⁶ = 121136347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121136311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5506190 + ... + 5506211.

It is an arithmetic number, because the mean of its divisors is an integer number (33037206).

Almost surely, 2^121136411 is an apocalyptic number.

121136411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121136411 is a deficient number, since it is larger than the sum of its proper divisors (11012413).

121136411 is a wasteful number, since it uses less digits than its factorization.

121136411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012412.

The product of its digits is 144, while the sum is 20.

The square root of 121136411 is about 11006.1987534298. The cubic root of 121136411 is about 494.7945424925.

Adding to 121136411 its reverse (114631121), we get a palindrome (235767532).

The spelling of 121136411 in words is "one hundred twenty-one million, one hundred thirty-six thousand, four hundred eleven".