2221202211211 has 4 divisors (see below), whose sum is σ = 2272858076632. Its totient is φ = 2169546345792.

The previous prime is 2221202211169. The next prime is 2221202211307. The reversal of 2221202211211 is 1121122021222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221202211211 - 2³⁷ = 2083763257739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221202211611) 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, 25827932646 + ... + 25827932731.

It is an arithmetic number, because the mean of its divisors is an integer number (568214519158).

Almost surely, 2^{2221202211211} is an apocalyptic number.

2221202211211 is a deficient number, since it is larger than the sum of its proper divisors (51655865421).

2221202211211 is an equidigital number, since it uses as much as digits as its factorization.

2221202211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51655865420.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2221202211211 its reverse (1121122021222), we get a palindrome (3342324232433).

The spelling of 2221202211211 in words is "two trillion, two hundred twenty-one billion, two hundred two million, two hundred eleven thousand, two hundred eleven".