2012001221201 has 4 divisors (see below), whose sum is σ = 2012584582500. Its totient is φ = 2011417859904.

The previous prime is 2012001221189. The next prime is 2012001221257. The reversal of 2012001221201 is 1021221002102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 335038380625 + 1676962840576 = 578825^2 + 1294976^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012001221201 - 2²⁶ = 2011934112337 is a prime.

It is a super-2 number, since 2×2012001221201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012001211201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291675476 + ... + 291682373.

It is an arithmetic number, because the mean of its divisors is an integer number (503146145625).

Almost surely, 2^{2012001221201} is an apocalyptic number.

It is an amenable number.

2012001221201 is a deficient number, since it is larger than the sum of its proper divisors (583361299).

2012001221201 is an equidigital number, since it uses as much as digits as its factorization.

2012001221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583361298.

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

Adding to 2012001221201 its reverse (1021221002102), we get a palindrome (3033222223303).

The spelling of 2012001221201 in words is "two trillion, twelve billion, one million, two hundred twenty-one thousand, two hundred one".