121612104 has 80 divisors (see below), whose sum is σ = 347151420. Its totient is φ = 39761280.

The previous prime is 121612097. The next prime is 121612121. The reversal of 121612104 is 401216121.

It can be written as a sum of positive squares in 2 ways, for example, as 120956004 + 656100 = 10998^2 + 810^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32574 + ... + 36114.

Almost surely, 2^121612104 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 121612104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173575710).

121612104 is an abundant number, since it is smaller than the sum of its proper divisors (225539316).

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

121612104 is a wasteful number, since it uses less digits than its factorization.

121612104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612 (or 3599 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 121612104 is about 11027.7878107987. The cubic root of 121612104 is about 495.4413694190.

Adding to 121612104 its reverse (401216121), we get a palindrome (522828225).

The spelling of 121612104 in words is "one hundred twenty-one million, six hundred twelve thousand, one hundred four".