12120000012021 has 16 divisors (see below), whose sum is σ = 17632308764160. Its totient is φ = 7344113787120.

The previous prime is 12120000011969. The next prime is 12120000012059. The reversal of 12120000012021 is 12021000002121.

It is not a de Polignac number, because 12120000012021 - 2⁴¹ = 9920976756469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120000011988 and 12120000012006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120000012521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33335595 + ... + 33697208.

It is an arithmetic number, because the mean of its divisors is an integer number (1102019297760).

Almost surely, 2^{12120000012021} is an apocalyptic number.

12120000012021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12120000012021 is a deficient number, since it is larger than the sum of its proper divisors (5512308752139).

12120000012021 is a wasteful number, since it uses less digits than its factorization.

12120000012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67038296.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12120000012021 its reverse (12021000002121), we get a palindrome (24141000014142).

The spelling of 12120000012021 in words is "twelve trillion, one hundred twenty billion, twelve thousand, twenty-one".