121247104 has 32 divisors (see below), whose sum is σ = 263508840. Its totient is φ = 55111680.

The previous prime is 121247089. The next prime is 121247129. The reversal of 121247104 is 401742121.

It is a tau number, because it is divible by the number of its divisors (32).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41649 + ... + 44464.

Almost surely, 2^121247104 is an apocalyptic number.

It is an amenable number.

121247104 is an abundant number, since it is smaller than the sum of its proper divisors (142261736).

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

121247104 is an equidigital number, since it uses as much as digits as its factorization.

121247104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86138 (or 86126 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 121247104 is about 11011.2262714014. The cubic root of 121247104 is about 494.9452090496.

Adding to 121247104 its reverse (401742121), we get a palindrome (522989225).

The spelling of 121247104 in words is "one hundred twenty-one million, two hundred forty-seven thousand, one hundred four".