121105602143 has 4 divisors (see below), whose sum is σ = 121108531608. Its totient is φ = 121102672680.

The previous prime is 121105602131. The next prime is 121105602187. The reversal of 121105602143 is 341206501121.

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 121105602143 - 2¹⁴ = 121105585759 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 (121105602113) 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, 1401821 + ... + 1485702.

It is an arithmetic number, because the mean of its divisors is an integer number (30277132902).

Almost surely, 2^121105602143 is an apocalyptic number.

121105602143 is a deficient number, since it is larger than the sum of its proper divisors (2929465).

121105602143 is an equidigital number, since it uses as much as digits as its factorization.

121105602143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929464.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 121105602143 in words is "one hundred twenty-one billion, one hundred five million, six hundred two thousand, one hundred forty-three".