121038447 has 4 divisors (see below), whose sum is σ = 161384600. Its totient is φ = 80692296.

The previous prime is 121038439. The next prime is 121038451. The reversal of 121038447 is 744830121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121038447 - 2³ = 121038439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121038497) 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, 20173072 + ... + 20173077.

It is an arithmetic number, because the mean of its divisors is an integer number (40346150).

Almost surely, 2^121038447 is an apocalyptic number.

121038447 is a deficient number, since it is larger than the sum of its proper divisors (40346153).

121038447 is an equidigital number, since it uses as much as digits as its factorization.

121038447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40346152.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 121038447 is about 11001.7474521096. The cubic root of 121038447 is about 494.6611250650.

Adding to 121038447 its reverse (744830121), we get a palindrome (865868568).

The spelling of 121038447 in words is "one hundred twenty-one million, thirty-eight thousand, four hundred forty-seven".