12012001022021 has 32 divisors (see below), whose sum is σ = 17076707359488. Its totient is φ = 8131765386240.

The previous prime is 12012001022017. The next prime is 12012001022039. The reversal of 12012001022021 is 12022010021021.

It is a cyclic number.

It is not a de Polignac number, because 12012001022021 - 2² = 12012001022017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12012001021987 and 12012001022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012001022081) 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, 352924190 + ... + 352958223.

It is an arithmetic number, because the mean of its divisors is an integer number (533647104984).

Almost surely, 2^{12012001022021} is an apocalyptic number.

12012001022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12012001022021 is a deficient number, since it is larger than the sum of its proper divisors (5064706337467).

12012001022021 is a wasteful number, since it uses less digits than its factorization.

12012001022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705882461.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12012001022021 its reverse (12022010021021), we get a palindrome (24034011043042).

The spelling of 12012001022021 in words is "twelve trillion, twelve billion, one million, twenty-two thousand, twenty-one".