20120222111201 has 8 divisors (see below), whose sum is σ = 20450202729000. Its totient is φ = 19790246039040.

The previous prime is 20120222111153. The next prime is 20120222111263. The reversal of 20120222111201 is 10211122202102.

It can be written as a sum of positive squares in 4 ways, for example, as 517465861201 + 19602756250000 = 719351^2 + 4427500^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120222111201 - 2⁴² = 15722175600097 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 20120222111201.

It is not an unprimeable number, because it can be changed into a prime (20120222111401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8445875 + ... + 10562823.

It is an arithmetic number, because the mean of its divisors is an integer number (2556275341125).

Almost surely, 2^{20120222111201} is an apocalyptic number.

It is an amenable number.

20120222111201 is a deficient number, since it is larger than the sum of its proper divisors (329980617799).

20120222111201 is a wasteful number, since it uses less digits than its factorization.

20120222111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272819.

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

Adding to 20120222111201 its reverse (10211122202102), we get a palindrome (30331344313303).

Subtracting from 20120222111201 its reverse (10211122202102), we obtain a palindrome (9909099909099).

The spelling of 20120222111201 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, one hundred eleven thousand, two hundred one".