12012120022021 has 32 divisors (see below), whose sum is σ = 14994471935232. Its totient is φ = 9389327016960.

The previous prime is 12012120022003. The next prime is 12012120022027. The reversal of 12012120022021 is 12022002121021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012120022021 - 2¹⁹ = 12012119497733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012120021986 and 12012120022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012120022027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11862826 + ... + 12835531.

It is an arithmetic number, because the mean of its divisors is an integer number (468577247976).

Almost surely, 2^{12012120022021} is an apocalyptic number.

It is an amenable number.

12012120022021 is a deficient number, since it is larger than the sum of its proper divisors (2982351913211).

12012120022021 is a wasteful number, since it uses less digits than its factorization.

12012120022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24698509.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12012120022021 its reverse (12022002121021), we get a palindrome (24034122143042).

The spelling of 12012120022021 in words is "twelve trillion, twelve billion, one hundred twenty million, twenty-two thousand, twenty-one".