2221220210111 has 4 divisors (see below), whose sum is σ = 2538537382992. Its totient is φ = 1903903037232.

The previous prime is 2221220210059. The next prime is 2221220210189. The reversal of 2221220210111 is 1110120221222.

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

It is not a de Polignac number, because 2221220210111 - 2⁶ = 2221220210047 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 2221220210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221220210191) 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, 158658586430 + ... + 158658586443.

It is an arithmetic number, because the mean of its divisors is an integer number (634634345748).

Almost surely, 2^{2221220210111} is an apocalyptic number.

2221220210111 is a deficient number, since it is larger than the sum of its proper divisors (317317172881).

2221220210111 is an equidigital number, since it uses as much as digits as its factorization.

2221220210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317317172880.

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

Adding to 2221220210111 its reverse (1110120221222), we get a palindrome (3331340431333).

The spelling of 2221220210111 in words is "two trillion, two hundred twenty-one billion, two hundred twenty million, two hundred ten thousand, one hundred eleven".