121204413 has 12 divisors (see below), whose sum is σ = 190988928. Its totient is φ = 73457160.

The previous prime is 121204393. The next prime is 121204417. The reversal of 121204413 is 314402121.

It is not a de Polignac number, because 121204413 - 2⁵ = 121204381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121204417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612045 + ... + 612242.

It is an arithmetic number, because the mean of its divisors is an integer number (15915744).

Almost surely, 2^121204413 is an apocalyptic number.

It is an amenable number.

121204413 is a deficient number, since it is larger than the sum of its proper divisors (69784515).

121204413 is a wasteful number, since it uses less digits than its factorization.

121204413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224304 (or 1224301 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121204413 is about 11009.2875791306. The cubic root of 121204413 is about 494.8871123044.

Adding to 121204413 its reverse (314402121), we get a palindrome (435606534).

The spelling of 121204413 in words is "one hundred twenty-one million, two hundred four thousand, four hundred thirteen".