121281838 has 8 divisors (see below), whose sum is σ = 181986840. Its totient is φ = 60619560.

The previous prime is 121281821. The next prime is 121281863. The reversal of 121281838 is 838182121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253 + ... + 15736.

It is an arithmetic number, because the mean of its divisors is an integer number (22748355).

Almost surely, 2^121281838 is an apocalyptic number.

121281838 is a deficient number, since it is larger than the sum of its proper divisors (60705002).

121281838 is a wasteful number, since it uses less digits than its factorization.

121281838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21362.

The product of its digits is 6144, while the sum is 34.

The square root of 121281838 is about 11012.8033669906. The cubic root of 121281838 is about 494.9924673207.

The spelling of 121281838 in words is "one hundred twenty-one million, two hundred eighty-one thousand, eight hundred thirty-eight".