121017319489 has 4 divisors (see below), whose sum is σ = 132018894000. Its totient is φ = 110015744980.

The previous prime is 121017319441. The next prime is 121017319513. The reversal of 121017319489 is 984913710121.

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 121017319489 - 2¹¹ = 121017317441 is a prime.

It is a super-2 number, since 2×121017319489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121017319789) 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, 5500787239 + ... + 5500787260.

It is an arithmetic number, because the mean of its divisors is an integer number (33004723500).

Almost surely, 2^121017319489 is an apocalyptic number.

It is an amenable number.

121017319489 is a deficient number, since it is larger than the sum of its proper divisors (11001574511).

121017319489 is a wasteful number, since it uses less digits than its factorization.

121017319489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11001574510.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 121017319489 in words is "one hundred twenty-one billion, seventeen million, three hundred nineteen thousand, four hundred eighty-nine".