121544104 has 64 divisors (see below), whose sum is σ = 260366400. Its totient is φ = 52684800.

The previous prime is 121544099. The next prime is 121544123. The reversal of 121544104 is 401445121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247299 + ... + 247789.

It is an arithmetic number, because the mean of its divisors is an integer number (4068225).

Almost surely, 2^121544104 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 121544104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130183200).

121544104 is an abundant number, since it is smaller than the sum of its proper divisors (138822296).

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

121544104 is a wasteful number, since it uses less digits than its factorization.

121544104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 121544104 is about 11024.7042590720. The cubic root of 121544104 is about 495.3490093845.

Adding to 121544104 its reverse (401445121), we get a palindrome (522989225).

The spelling of 121544104 in words is "one hundred twenty-one million, five hundred forty-four thousand, one hundred four".