121112319465 has 48 divisors (see below), whose sum is σ = 219443128320. Its totient is φ = 61718267520.

The previous prime is 121112319463. The next prime is 121112319481. The reversal of 121112319465 is 564913211121.

It is not a de Polignac number, because 121112319465 - 2¹ = 121112319463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121112319463) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 439282 + ... + 659691.

It is an arithmetic number, because the mean of its divisors is an integer number (4571731840).

Almost surely, 2^121112319465 is an apocalyptic number.

121112319465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121112319465 is a deficient number, since it is larger than the sum of its proper divisors (98330808855).

121112319465 is a wasteful number, since it uses less digits than its factorization.

121112319465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099094 (or 1099091 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 121112319465 in words is "one hundred twenty-one billion, one hundred twelve million, three hundred nineteen thousand, four hundred sixty-five".