20012122112201 has 4 divisors (see below), whose sum is σ = 20169697876992. Its totient is φ = 19854546347412.

The previous prime is 20012122112179. The next prime is 20012122112209. The reversal of 20012122112201 is 10221122121002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20012122112201 - 2⁶ = 20012122112137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20012122112201.

It is not an unprimeable number, because it can be changed into a prime (20012122112209) 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, 78787882205 + ... + 78787882458.

It is an arithmetic number, because the mean of its divisors is an integer number (5042424469248).

Almost surely, 2^{20012122112201} is an apocalyptic number.

It is an amenable number.

20012122112201 is a deficient number, since it is larger than the sum of its proper divisors (157575764791).

20012122112201 is a wasteful number, since it uses less digits than its factorization.

20012122112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157575764790.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20012122112201 its reverse (10221122121002), we get a palindrome (30233244233203).

The spelling of 20012122112201 in words is "twenty trillion, twelve billion, one hundred twenty-two million, one hundred twelve thousand, two hundred one".