121010112021 has 8 divisors (see below), whose sum is σ = 162944309664. Its totient is φ = 79874661200.

The previous prime is 121010112017. The next prime is 121010112029. The reversal of 121010112021 is 120211010121.

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 121010112021 - 2² = 121010112017 is a prime.

It is a super-2 number, since 2×121010112021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121010111988 and 121010112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010112029) 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, 199686351 + ... + 199686956.

It is an arithmetic number, because the mean of its divisors is an integer number (20368038708).

Almost surely, 2^121010112021 is an apocalyptic number.

It is an amenable number.

121010112021 is a deficient number, since it is larger than the sum of its proper divisors (41934197643).

121010112021 is a wasteful number, since it uses less digits than its factorization.

121010112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399373411.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121010112021 its reverse (120211010121), we get a palindrome (241221122142).

The spelling of 121010112021 in words is "one hundred twenty-one billion, ten million, one hundred twelve thousand, twenty-one".