20121002020201 has 16 divisors (see below), whose sum is σ = 20833084419840. Its totient is φ = 19410139848960.

The previous prime is 20121002020199. The next prime is 20121002020241. The reversal of 20121002020201 is 10202020012102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20121002020201 - 2¹ = 20121002020199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121002020241) 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, 450242880 + ... + 450287566.

It is an arithmetic number, because the mean of its divisors is an integer number (1302067776240).

Almost surely, 2^{20121002020201} is an apocalyptic number.

It is an amenable number.

20121002020201 is a deficient number, since it is larger than the sum of its proper divisors (712082399639).

20121002020201 is a wasteful number, since it uses less digits than its factorization.

20121002020201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57984.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20121002020201 its reverse (10202020012102), we get a palindrome (30323022032303).

The spelling of 20121002020201 in words is "twenty trillion, one hundred twenty-one billion, two million, twenty thousand, two hundred one".