12010020121 has 8 divisors (see below), whose sum is σ = 13380603264. Its totient is φ = 10685897520.

The previous prime is 12010020119. The next prime is 12010020131. The reversal of 12010020121 is 12102001021.

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 12010020121 - 2¹ = 12010020119 is a prime.

It is a super-3 number, since 3×12010020121³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12010020098 and 12010020107.

It is not an unprimeable number, because it can be changed into a prime (12010020131) 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, 11614590 + ... + 11615623.

It is an arithmetic number, because the mean of its divisors is an integer number (1672575408).

Almost surely, 2^12010020121 is an apocalyptic number.

12010020121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12010020121 is a deficient number, since it is larger than the sum of its proper divisors (1370583143).

12010020121 is a wasteful number, since it uses less digits than its factorization.

12010020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23230271.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12010020121 its reverse (12102001021), we get a palindrome (24112021142).

The spelling of 12010020121 in words is "twelve billion, ten million, twenty thousand, one hundred twenty-one".