121441904893 has 4 divisors (see below), whose sum is σ = 125359385728. Its totient is φ = 117524424060.

The previous prime is 121441904851. The next prime is 121441904951. The reversal of 121441904893 is 398409144121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121441904893 - 2¹⁷ = 121441773821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121441902893) 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 3 ways as a sum of consecutive naturals, for example, 1958740371 + ... + 1958740432.

It is an arithmetic number, because the mean of its divisors is an integer number (31339846432).

Almost surely, 2^121441904893 is an apocalyptic number.

It is an amenable number.

121441904893 is a deficient number, since it is larger than the sum of its proper divisors (3917480835).

121441904893 is an equidigital number, since it uses as much as digits as its factorization.

121441904893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917480834.

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 121441904893 in words is "one hundred twenty-one billion, four hundred forty-one million, nine hundred four thousand, eight hundred ninety-three".