121011021983 has 8 divisors (see below), whose sum is σ = 127417196400. Its totient is φ = 114608564928.

The previous prime is 121011021941. The next prime is 121011022007. The reversal of 121011021983 is 389120110121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121011021983 - 2¹⁰ = 121011020959 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 (121011021913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862388 + ... + 992841.

It is an arithmetic number, because the mean of its divisors is an integer number (15927149550).

Almost surely, 2^121011021983 is an apocalyptic number.

121011021983 is a deficient number, since it is larger than the sum of its proper divisors (6406174417).

121011021983 is a wasteful number, since it uses less digits than its factorization.

121011021983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858681.

The product of its (nonzero) digits is 864, while the sum is 29.

The spelling of 121011021983 in words is "one hundred twenty-one billion, eleven million, twenty-one thousand, nine hundred eighty-three".