121112021011 has 8 divisors (see below), whose sum is σ = 121534362560. Its totient is φ = 120690269568.

The previous prime is 121112020957. The next prime is 121112021071. The reversal of 121112021011 is 110120211121.

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 121112021011 - 2¹⁵ = 121111988243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121112020982 and 121112021000.

It is not an unprimeable number, because it can be changed into a prime (121112021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265675 + ... + 559291.

It is an arithmetic number, because the mean of its divisors is an integer number (15191795320).

Almost surely, 2^121112021011 is an apocalyptic number.

121112021011 is a deficient number, since it is larger than the sum of its proper divisors (422341549).

121112021011 is a wasteful number, since it uses less digits than its factorization.

121112021011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295053.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121112021011 its reverse (110120211121), we get a palindrome (231232232132).

The spelling of 121112021011 in words is "one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, eleven".