121390083 has 20 divisors (see below), whose sum is σ = 182676120. Its totient is φ = 80328672.

The previous prime is 121390063. The next prime is 121390091. The reversal of 121390083 is 380093121.

It is not a de Polignac number, because 121390083 - 2⁵ = 121390051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (121390063) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 5628 + ... + 16566.

It is an arithmetic number, because the mean of its divisors is an integer number (9133806).

Almost surely, 2^121390083 is an apocalyptic number.

121390083 is a deficient number, since it is larger than the sum of its proper divisors (61286037).

121390083 is a wasteful number, since it uses less digits than its factorization.

121390083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088 (or 11079 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121390083 is about 11017.7167779899. The cubic root of 121390083 is about 495.1396850962.

The spelling of 121390083 in words is "one hundred twenty-one million, three hundred ninety thousand, eighty-three".