121143001123 has 4 divisors (see below), whose sum is σ = 121574115288. Its totient is φ = 120711886960.

The previous prime is 121143001121. The next prime is 121143001139. The reversal of 121143001123 is 321100341121.

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 121143001123 - 2¹ = 121143001121 is a prime.

It is a super-3 number, since 3×121143001123³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121143001123.

It is not an unprimeable number, because it can be changed into a prime (121143001121) 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, 215556661 + ... + 215557222.

It is an arithmetic number, because the mean of its divisors is an integer number (30393528822).

Almost surely, 2^121143001123 is an apocalyptic number.

121143001123 is a deficient number, since it is larger than the sum of its proper divisors (431114165).

121143001123 is an equidigital number, since it uses as much as digits as its factorization.

121143001123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431114164.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121143001123 its reverse (321100341121), we get a palindrome (442243342244).

The spelling of 121143001123 in words is "one hundred twenty-one billion, one hundred forty-three million, one thousand, one hundred twenty-three".