1222121110201 has 16 divisors (see below), whose sum is σ = 1232224373520. Its totient is φ = 1212049612800.

The previous prime is 1222121110153. The next prime is 1222121110213. The reversal of 1222121110201 is 1020111212221.

It can be written as a sum of positive squares in 8 ways, for example, as 23317290000 + 1198803820201 = 152700^2 + 1094899^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222121110201 - 2⁹ = 1222121109689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222121110291) 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, 235518915 + ... + 235524103.

It is an arithmetic number, because the mean of its divisors is an integer number (77014023345).

Almost surely, 2^{1222121110201} is an apocalyptic number.

It is an amenable number.

1222121110201 is a deficient number, since it is larger than the sum of its proper divisors (10103263319).

1222121110201 is a wasteful number, since it uses less digits than its factorization.

1222121110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7884.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1222121110201 its reverse (1020111212221), we get a palindrome (2242232322422).

The spelling of 1222121110201 in words is "one trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred ten thousand, two hundred one".