2220001211201 has 4 divisors (see below), whose sum is σ = 2240368194900. Its totient is φ = 2199634227504.

The previous prime is 2220001211191. The next prime is 2220001211257. The reversal of 2220001211201 is 1021121000222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1108766880400 + 1111234330801 = 1052980^2 + 1054151^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2220001211201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220001211261) 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, 10183491686 + ... + 10183491903.

It is an arithmetic number, because the mean of its divisors is an integer number (560092048725).

Almost surely, 2^{2220001211201} is an apocalyptic number.

It is an amenable number.

2220001211201 is a deficient number, since it is larger than the sum of its proper divisors (20366983699).

2220001211201 is a wasteful number, since it uses less digits than its factorization.

2220001211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366983698.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2220001211201 its reverse (1021121000222), we get a palindrome (3241122211423).

The spelling of 2220001211201 in words is "two trillion, two hundred twenty billion, one million, two hundred eleven thousand, two hundred one".