121361811 has 8 divisors (see below), whose sum is σ = 161866704. Its totient is φ = 80882400.

The previous prime is 121361803. The next prime is 121361831. The reversal of 121361811 is 118163121.

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

It is not a de Polignac number, because 121361811 - 2³ = 121361803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121361831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14761 + ... + 21461.

It is an arithmetic number, because the mean of its divisors is an integer number (20233338).

Almost surely, 2^121361811 is an apocalyptic number.

121361811 is a deficient number, since it is larger than the sum of its proper divisors (40504893).

121361811 is an equidigital number, since it uses as much as digits as its factorization.

121361811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12741.

The product of its digits is 288, while the sum is 24.

The square root of 121361811 is about 11016.4336788273. The cubic root of 121361811 is about 495.1012424279.

The spelling of 121361811 in words is "one hundred twenty-one million, three hundred sixty-one thousand, eight hundred eleven".