121165648 has 20 divisors (see below), whose sum is σ = 234934740. Its totient is φ = 60537344.

The previous prime is 121165621. The next prime is 121165663. The reversal of 121165648 is 846561121.

It can be written as a sum of positive squares in 2 ways, for example, as 22202944 + 98962704 = 4712^2 + 9948^2 .

It is a super-3 number, since 3×121165648³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32286 + ... + 35842.

It is an arithmetic number, because the mean of its divisors is an integer number (11746737).

Almost surely, 2^121165648 is an apocalyptic number.

It is an amenable number.

121165648 is a deficient number, since it is larger than the sum of its proper divisors (113769092).

121165648 is a wasteful number, since it uses less digits than its factorization.

121165648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5694 (or 5688 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 121165648 is about 11007.5268793676. The cubic root of 121165648 is about 494.8343465014.

The spelling of 121165648 in words is "one hundred twenty-one million, one hundred sixty-five thousand, six hundred forty-eight".