121112051021 has 8 divisors (see below), whose sum is σ = 130434270624. Its totient is φ = 111790675440.

The previous prime is 121112050933. The next prime is 121112051033. The reversal of 121112051021 is 120150211121.

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 121112051021 - 2¹⁰ = 121112049997 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 (121112051041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104510 + ... + 503136.

It is an arithmetic number, because the mean of its divisors is an integer number (16304283828).

Almost surely, 2^121112051021 is an apocalyptic number.

It is an amenable number.

121112051021 is a deficient number, since it is larger than the sum of its proper divisors (9322219603).

121112051021 is a wasteful number, since it uses less digits than its factorization.

121112051021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422011.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 121112051021 its reverse (120150211121), we get a palindrome (241262262142).

The spelling of 121112051021 in words is "one hundred twenty-one billion, one hundred twelve million, fifty-one thousand, twenty-one".