12000001212021 has 16 divisors (see below), whose sum is σ = 17385400739840. Its totient is φ = 7334465934960.

The previous prime is 12000001212007. The next prime is 12000001212053. The reversal of 12000001212021 is 12021210000021.

It is not a de Polignac number, because 12000001212021 - 2⁹ = 12000001211509 is a prime.

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 = 12000001211988 and 12000001212006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000001217021) 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, 3395584315 + ... + 3395587848.

It is an arithmetic number, because the mean of its divisors is an integer number (1086587546240).

Almost surely, 2^{12000001212021} is an apocalyptic number.

It is an amenable number.

12000001212021 is a deficient number, since it is larger than the sum of its proper divisors (5385399527819).

12000001212021 is a wasteful number, since it uses less digits than its factorization.

12000001212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791172216.

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

Adding to 12000001212021 its reverse (12021210000021), we get a palindrome (24021211212042).

The spelling of 12000001212021 in words is "twelve trillion, one million, two hundred twelve thousand, twenty-one".