2221010111011 has 4 divisors (see below), whose sum is σ = 2221094403792. Its totient is φ = 2220925818232.

The previous prime is 2221010110999. The next prime is 2221010111017. The reversal of 2221010111011 is 1101110101222.

It is a happy number.

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 2221010111011 - 2⁷ = 2221010110883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221010110982 and 2221010111000.

It is not an unprimeable number, because it can be changed into a prime (2221010111017) 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, 42106855 + ... + 42159568.

It is an arithmetic number, because the mean of its divisors is an integer number (555273600948).

Almost surely, 2^{2221010111011} is an apocalyptic number.

2221010111011 is a deficient number, since it is larger than the sum of its proper divisors (84292781).

2221010111011 is an equidigital number, since it uses as much as digits as its factorization.

2221010111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84292780.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2221010111011 its reverse (1101110101222), we get a palindrome (3322120212233).

The spelling of 2221010111011 in words is "two trillion, two hundred twenty-one billion, ten million, one hundred eleven thousand, eleven".