121409313723 has 12 divisors (see below), whose sum is σ = 179868332280. Its totient is φ = 80938335456.

The previous prime is 121409313721. The next prime is 121409313733. The reversal of 121409313723 is 327313904121.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 121409313723 - 2¹ = 121409313721 is a prime.

It is a super-3 number, since 3×121409313723³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (121409313721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1777011 + ... + 1844067.

It is an arithmetic number, because the mean of its divisors is an integer number (14989027690).

Almost surely, 2^121409313723 is an apocalyptic number.

121409313723 is a deficient number, since it is larger than the sum of its proper divisors (58459018557).

121409313723 is an frugal number, since it uses more digits than its factorization.

121409313723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134123 (or 67060 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 121409313723 in words is "one hundred twenty-one billion, four hundred nine million, three hundred thirteen thousand, seven hundred twenty-three".