12101021021 has 8 divisors (see below), whose sum is σ = 12179532288. Its totient is φ = 12022668000.

The previous prime is 12101020949. The next prime is 12101021041. The reversal of 12101021021 is 12012010121.

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 12101021021 - 2²² = 12096826717 is a prime.

It is a super-3 number, since 3×12101021021³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12101020993 and 12101021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101021041) 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, 115841 + ... + 193961.

It is an arithmetic number, because the mean of its divisors is an integer number (1522441536).

Almost surely, 2^12101021021 is an apocalyptic number.

It is an amenable number.

12101021021 is a deficient number, since it is larger than the sum of its proper divisors (78511267).

12101021021 is an equidigital number, since it uses as much as digits as its factorization.

12101021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79123.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12101021021 its reverse (12012010121), we get a palindrome (24113031142).

The spelling of 12101021021 in words is "twelve billion, one hundred one million, twenty-one thousand, twenty-one".