121278283 has 16 divisors (see below), whose sum is σ = 144460800. Its totient is φ = 101727528.

The previous prime is 121278271. The next prime is 121278299. The reversal of 121278283 is 382872121.

It is not a de Polignac number, because 121278283 - 2⁵ = 121278251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121278263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12360 + ... + 19882.

It is an arithmetic number, because the mean of its divisors is an integer number (9028800).

Almost surely, 2^121278283 is an apocalyptic number.

121278283 is a deficient number, since it is larger than the sum of its proper divisors (23182517).

121278283 is an frugal number, since it uses more digits than its factorization.

121278283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7591 (or 7577 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 121278283 is about 11012.6419627626. The cubic root of 121278283 is about 494.9876308850.

The spelling of 121278283 in words is "one hundred twenty-one million, two hundred seventy-eight thousand, two hundred eighty-three".