121339648 has 36 divisors (see below), whose sum is σ = 243828760. Its totient is φ = 60263424.

The previous prime is 121339637. The next prime is 121339649. The reversal of 121339648 is 846933121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121339649) 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, 38683 + ... + 41701.

Almost surely, 2^121339648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121339648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121914380).

121339648 is an abundant number, since it is smaller than the sum of its proper divisors (122489112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121339648 is an equidigital number, since it uses as much as digits as its factorization.

121339648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192 (or 3178 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 121339648 is about 11015.4277266024. The cubic root of 121339648 is about 495.0711022578.

The spelling of 121339648 in words is "one hundred twenty-one million, three hundred thirty-nine thousand, six hundred forty-eight".