2221211222201 has 4 divisors (see below), whose sum is σ = 2221667234304. Its totient is φ = 2220755210100.

The previous prime is 2221211222129. The next prime is 2221211222213. The reversal of 2221211222201 is 1022221121222.

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 2221211222201 - 2³⁰ = 2220137480377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221211222261) 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, 227998745 + ... + 228008486.

It is an arithmetic number, because the mean of its divisors is an integer number (555416808576).

Almost surely, 2^{2221211222201} is an apocalyptic number.

It is an amenable number.

2221211222201 is a deficient number, since it is larger than the sum of its proper divisors (456012103).

2221211222201 is an equidigital number, since it uses as much as digits as its factorization.

2221211222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456012102.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2221211222201 its reverse (1022221121222), we get a palindrome (3243432343423).

The spelling of 2221211222201 in words is "two trillion, two hundred twenty-one billion, two hundred eleven million, two hundred twenty-two thousand, two hundred one".