121553411 has 8 divisors (see below), whose sum is σ = 139496544. Its totient is φ = 103754880.

The previous prime is 121553407. The next prime is 121553423. The reversal of 121553411 is 114355121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121553411 - 2² = 121553407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121553401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34340 + ... + 37713.

It is an arithmetic number, because the mean of its divisors is an integer number (17437068).

Almost surely, 2^121553411 is an apocalyptic number.

121553411 is a deficient number, since it is larger than the sum of its proper divisors (17943133).

121553411 is an equidigital number, since it uses as much as digits as its factorization.

121553411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72301.

The product of its digits is 600, while the sum is 23.

The square root of 121553411 is about 11025.1263484824. The cubic root of 121553411 is about 495.3616525195.

The spelling of 121553411 in words is "one hundred twenty-one million, five hundred fifty-three thousand, four hundred eleven".