20120222102201 has 16 divisors (see below), whose sum is σ = 22110569094096. Its totient is φ = 18194182346496.

The previous prime is 20120222102143. The next prime is 20120222102219. The reversal of 20120222102201 is 10220122202102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1614945348025 + 18505276754176 = 1270805^2 + 4301776^2 .

It is not a de Polignac number, because 20120222102201 - 2⁴² = 15722175591097 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 20120222102201.

It is not an unprimeable number, because it can be changed into a prime (20120222122201) 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, 21910010 + ... + 22809843.

It is an arithmetic number, because the mean of its divisors is an integer number (1381910568381).

Almost surely, 2^{20120222102201} is an apocalyptic number.

It is an amenable number.

20120222102201 is a deficient number, since it is larger than the sum of its proper divisors (1990346991895).

20120222102201 is a wasteful number, since it uses less digits than its factorization.

20120222102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44720572.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20120222102201 its reverse (10220122202102), we get a palindrome (30340344304303).

Subtracting from 20120222102201 its reverse (10220122202102), we obtain a palindrome (9900099900099).

The spelling of 20120222102201 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, one hundred two thousand, two hundred one".